Contents

Esperanto

This article is about the language. For other uses, see Esperanto (disambiguation).

Esperanto
Created by	L. L. Zamenhof
Setting and usage	International auxiliary language
Users	(Native: 200 to 1000 (1996, est.); others: 10,000 to 2,000,000 cited 1887)
Purpose	Constructed language International auxiliary language Esperanto
Sources	Vocabulary from Romance and Germanic languages; phonology from Slavic languages
Official status
Regulated by	Akademio de Esperanto
Language codes
ISO 639-1	eo
ISO 639-2	epo
ISO 639-3	epo

Part of a series on
Esperanto
Language Grammar Phonology Orthography (Braille) Vocabulary Etymology
History Zamenhof Proto-Esperanto Unua Libro Dua Libro La Esperantisto Fundamento de Esperanto Declaration of Boulogne Montevideo Resolution Manifesto of Rauma Manifesto of Prague Modern evolution of Esperanto
Culture Esperanto movement Esperantist Esperantujo Literature Music Film La Espero Libera Folio Literatura Mondo Native speakers Libraries Pop culture references Publications Symbols Profanity Zamenhof Day
Organizations and services World Esperanto Congress Akademio de Esperanto Universal Esperanto Association World Esperanto Youth Organization International Youth Congress Esperanto Youth Week World Anational Association Encyclopedia Pasporta Servo Plouézec Meetings European Esperanto Union Europe–Democracy–Esperanto Panamerican Congress Skolta Esperanto Ligo
By country Austria Bulgaria China‎ Czech Republic‎ Hungary Japan Korea Malaysia Poland Romania Slovakia Soviet Union
Related topics Auxiliary language Constructed language Ido Homaranismo Linguistic discrimination
Wikimedia Constructed languages portal Task force Outline Esperanto Wikipedia (Vikipedio) Vikivortaro Vikicitaro Vikifontaro Vikilibroj Vikikomunejo Vikispecoj Vikinovaĵoj Vikivojaĵo
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Audio file "Esperanto.ogg" not found is the most widely spoken constructed international auxiliary language. Its name derives from Doktoro Esperanto (Dr. Hopeful), the pseudonym under which L. L. Zamenhof published the first book detailing Esperanto, the Unua Libro, in 1887. Zamenhof's goal was to create an easy-to-learn and politically neutral language that would serve as a universal second language to foster peace and international understanding.

Esperanto is the only constructed language with native speakers, that is, people who learned it from their parents as one of their native languages. Estimates range from 10,000 to two million additional active or fluent speakers. Usage is particularly high in eastern and northern Europe, eastern Asia, Brazil, and Iran. A World Congress of Esperanto was organized in France in 1905, and since then has been held in various countries every year apart from during the world wars. Although no country has adopted it officially, Esperanto was recommended by the French Academy of Sciences in 1921, was recognized by UNESCO in 1954, and is currently the language of instruction of a university in San Marino. There is evidence that learning Esperanto may provide a superior foundation for learning languages in general, and some primary schools teach it as preparation for learning other foreign languages.

History

Esperanto was created in the late 1870s and early 1880s by Dr. Ludovic Lazarus Zamenhof, a Russian-Jewish ophthalmologist from Bialystok, at the time part of the Russian Empire. According to Zamenhof, he created this language to foster harmony between people from different countries. His feelings and the situation in Bialystok may be gleaned from an extract from his famous letter to Nikolai Borovko:^[1]

The place where I was born and spent my childhood gave direction to all my future struggles. In Bialystok the inhabitants were divided into four distinct elements: Russians, Poles, Germans and Jews; each of these spoke their own language and looked on all the others as enemies. In such a town a sensitive nature feels more acutely than elsewhere the misery caused by language division and sees at every step that the diversity of languages is the first, or at least the most influential, basis for the separation of the human family into groups of enemies. I was brought up as an idealist; I was taught that all people were brothers, while outside in the street at every step I felt that there were no people, only Russians, Poles, Germans, Jews and so on. This was always a great torment to my infant mind, although many people may smile at such an 'anguish for the world' in a child. Since at that time I thought that 'grown-ups' were omnipotent, so I often said to myself that when I grew up I would certainly destroy this evil.

— L. L. Zamenhof, in a letter to N. Borovko, ca. 1895

After some ten years of development, which Zamenhof spent translating literature into Esperanto as well as writing original prose and verse, the first book of Esperanto grammar was published in Warsaw in July 1887. The number of speakers grew rapidly over the next few decades, at first primarily in the Russian Empire and Eastern Europe, then in Western Europe, the Americas, China, and Japan. In the early years, speakers of Esperanto kept in contact primarily through correspondence and periodicals, but in 1905 the first world congress of Esperanto speakers was held in Boulogne-sur-Mer, France. Since then world congresses have been held in different countries every year, except during the two World Wars. Since the Second World War, they have been attended by an average of over 2,000 and up to 6,000 people.

Zamenhof's name for the language was simply La Internacia Lingvo "the International Language".^[2]

Relation to 20th-century totalitarianism

As a potential vehicle for international understanding, Esperanto attracted the suspicion of many totalitarian states. The situation was especially pronounced in Nazi Germany, Imperial Japan and the Soviet Union under Joseph Stalin.

In Germany, there was additional motivation to persecute Esperanto because Zamenhof was Jewish. In his work, Mein Kampf, Hitler mentioned Esperanto as an example of a language that would be used by an International Jewish Conspiracy once they achieved world domination.^[3] Esperantists were killed during the Holocaust, with Zamenhof's family in particular singled out for murder.^[4]

In the early years of the Soviet Union, Esperanto was given a measure of government support, and the Soviet Esperanto Association was an officially recognized organization.^[5] However, in 1937, Stalin reversed this policy. He denounced Esperanto as "the language of spies" and had Esperantists exiled or executed. The use of Esperanto was effectively banned until 1956.^[5]

After the Spanish Civil War, Francoist Spain persecuted the Anarchists and Catalan nationalists among which Esperanto was extended^[6] but in the 1950s, the Esperanto movement was tolerated again.

Official use

Esperanto has never been a secondary official language of any recognized country. However, there were plans at the beginning of the 20th century to establish Neutral Moresnet as the world's first Esperanto state. Qian Xuantong, a Chinese linguist, promoted the replacement of Chinese with Esperanto.^[7] In addition, the self-proclaimed artificial island micronationofRose Island used Esperanto as its official language in 1968.

The U.S. Army has published military phrase books in Esperanto,^[8] to be used in wargames by mock enemy forces. In the summer of 1924, the American Radio Relay League adopted Esperanto as its official international auxiliary language, and hoped that the language would be used by radio amateurs in international communications, but its actual use for radio communications was negligible.

Esperanto is the working language of several non-profit international organizations such as the Sennacieca Asocio Tutmonda; most others are specifically Esperanto organizations. The largest of these, the World Esperanto Association, has an official consultative relationship with the United Nations and UNESCO, which recognized Esperanto as a medium for international understanding in 1954.^[9] Esperanto is also the first language of teaching and administration of one university, the International Academy of Sciences San Marino.^[10]

Linguistic properties

Classification

As a constructed language, Esperanto is not genealogically related to any ethnic language. It has been described as "a language lexically predominantly Romanic, morphologically intensively agglutinative, and to a certain degree isolating in character".^[11] The phonology, grammar, vocabulary, and semantics are based on the western Indo-European languages. The phonemic inventory is essentially Slavic, as is much of the semantics, while the vocabulary derives primarily from the Romance languages, with a lesser contribution from the Germanic languages. Pragmatics and other aspects of the language not specified by Zamenhof's original documents were influenced by the native languages of early speakers, primarily Russian, Polish, German, and French.

Typologically, Esperanto has prepositions and a free pragmatic word order that by default is subject-verb-object. Adjectives can be freely placed before or after the nouns they modify, though placing them before the noun is more common. New words are formed through extensive prefixing and suffixing.

Writing system

Esperanto is written with a modified version of the Latin alphabet, including six letters with diacritics: ĉ, ĝ, ĥ, ĵ, ŝ (with circumflex) and ŭ (with breve). The alphabet does not include the letters q, w, x,ory except in unassimilated foreign names.

The 28-letter alphabet is:

All letters are pronounced approximately as in the IPA, with the exception of c and the letters with diacritics:

Writing diacritic letters

The letters with diacritics (found in the "Latin-Extended A" section of the Unicode Standard) once caused problems with printing and computing. This was particularly true with the five letters with circumflexes, as they do not occur in any other language. The diacritics are normally only a problem now with computing situations such as internet chat groups and databases that are limited to ASCII characters.

There are two principal workarounds to this problem, which substitute digraphs for the accented letters. Zamenhof, the inventor of Esperanto, created an "h-convention", which replaces ĉ, ĝ, ĥ, ĵ, ŝ, and ŭ with ch, gh, hh, jh, sh, and u, respectively. A more recent "x-convention" has gained ground since the advent of computing. This system replaces each diacritic with an x after the letter, producing the six digraphs cx, gx, hx, jx, sx, and ux.

There are computer keyboard layouts that support the Esperanto alphabet, and some systems use software that automatically substitutes x- or h-convention digraphs with the corresponding diacritic letters. One example of this is EK for Microsoft Windows. Another example is the Esperanto Wikipedia, which uses the x-convention. When e.g. cx is entered, this will automatically appear as the correct ĉ in the saved text.

Phonology

Esperanto has 23 consonants, 5 vowels, and 2 semivowels that combine with the vowels to form 6 diphthongs. (The consonant /j/ and semivowel /i̯/ are both written j, and the uncommon consonant /dz/ is written with the digraph dz.^[12]) Tone is not used to distinguish meanings of words. Stress is always on the penultimate vowel in fully Esperanto words unless a final vowel oiselided, which occurs mostly in poetry. For example, familio "family" is [fa.mi.ˈli.o], with the stress on the i, but when the word is used without the final o (famili’), the stress remains on the i: [fa.mi.ˈli].

Consonants

The 23 consonants are:

The sound /r/ is usually rolled, but may be tapped [ɾ]. The /v/ is normally pronounced like English v, but may be pronounced [ʋ] (between English v and w) or [w], depending on the language background of the speaker. A semivowel /u̯/ normally occurs only in diphthongs after the vowels /a/ and /e/, not as a consonant /w/. Common, if debated, assimilation includes the pronunciation of nkas[ŋk] and kzas[ɡz].

A large number of consonant clusters can occur, up to three in initial position (as in stranga, "strange") and four in medial position (as in instrui, "teach"). Final clusters are uncommon except in foreign names, poetic elision of final o, and a very few basic words such as cent "hundred" and post "after".

Vowels

Esperanto has the five cardinal vowels found in such languages as Spanish, Swahili, Filipino, Modern Hebrew, and Modern Greek:

There are also two semivowels, /i̯/ and /u̯/, which combine with the cardinal vowels to form six falling diphthongs: aj, ej, oj, uj, aŭ, and eŭ (nearly the same as the diphthongs of Filipino).

Since there are only five vowels, a good deal of variation in pronunciation is tolerated. For instance, e commonly ranges from [e] (French é) to [ɛ] (French è). These details often depend on the speaker's native language. A glottal stop may occur between adjacent vowels in some people's speech, especially when the two vowels are the same, as in heroo "hero" ([he.ˈro.o]or[he.ˈro.ʔo]) and praavo "great-grandfather" ([pra.ˈa.vo]or[pra.ˈʔa.vo]).

Grammar

Esperanto words are derived by stringing together prefixes, roots, and suffixes. This process is regular, so that people can create new words as they speak and be understood. Compound words are formed with a modifier-first, head-final order, as in English (compare "birdsong" and "songbird," and likewise, birdokanto and kantobirdo).

The different parts of speech are marked by their own suffixes: all common nouns end in -o, all adjectivesin-a, all derived adverbs in -e, and all verbs in one of six tense and mood suffixes, such as the present tense -as.

Plural nouns used as grammatical subjects end in -oj (pronounced like English "oy"), whereas their direct object forms end in -on. Plural direct objects end with the combination -ojn (rhymes with "coin"); -o- indicates that the word is a noun, -j- indicates the plural, and -n indicates the accusative. Adjectives agree with their nouns; their endings are plural -aj (pronounced "eye"), accusative -an, and plural accusative -ajn (rhymes with "fine").

The suffix -n, besides indicating the direct object, is used to indicate movement and a few other things as well.

The six verb inflections consist of three tenses and three moods. They are present tense -as, future tense -os-, past tense -is, infinitive mood -i, conditional mood -us and jussive mood -u (used for wishes and commands). Verbs are not marked for person or number. Thus, kanti means "to sing", mi kantas means "I sing", vi kantas means "you sing", and ili kantas means "they sing".

Word order is comparatively free. Adjectives may precede or follow nouns; subjects, verbs and objects may occur in any order. However, the article la "the", demonstratives such as tiu "that" and prepositions (such as ĉe "at") must come before their related nouns. Similarly, the negative ne "not" and conjunctions such as kaj "and" and ke "that" must precede the phraseorclause that they introduce. In copular (A = B) clauses, word order is just as important as in English: "people are animals" is distinguished from "animals are people".

Vocabulary

The core vocabulary of Esperanto was defined by Lingvo internacia, published by Zamenhof in 1887. This book listed 900 roots; these could be expanded into tens of thousands of words using prefixes, suffixes, and compounding. In 1894, Zamenhof published the first Esperanto dictionary, Universala Vortaro, which had a larger set of roots. The rules of the language allowed speakers to borrow new roots as needed; it was recommended, however, that speakers use most international forms and then derive related meanings from these.

Since then, many words have been borrowed, primarily (but not solely) from the Western European languages. Not all proposed borrowings become widespread, but many do, especially technical and scientific terms. Terms for everyday use, on the other hand, are more likely to be derived from existing roots; komputilo "computer", for instance, is formed from the verb komputi "compute" and the suffix -ilo "tool". Words are also calqued; that is, words acquire new meanings based on usage in other languages. For example, the word muso "mouse" has acquired the meaning of a computer mouse from its usage in English. Esperanto speakers often debate about whether a particular borrowing is justified or whether meaning can be expressed by deriving from or extending the meaning of existing words.

Some compounds and formed words in Esperanto are not entirely straightforward; for example, eldoni, literally "give out", means "publish", paralleling the usage of certain Western European languages (such as German). In addition, the suffix -um- has no defined meaning; words using the suffix must be learned separately (such as dekstren "to the right" and dekstrumen "clockwise").

There are not many idiomatic or slang words in Esperanto, as these forms of speech tend to make international communication difficult—working against Esperanto's main goal.

Useful phrases

Below are listed some useful Esperanto words and phrases along with IPA transcriptions:

Sample text

The following short extract gives an idea of the character of Esperanto.^[13] (Pronunciation is covered above; the main thing for English speakers to remember is that the Esperanto letter j has the sound of the English letter y.)

• Esperanto:

«En multaj lokoj de Ĉinio estis temploj de drako-reĝo. Dum trosekeco oni preĝis en la temploj, ke la drako-reĝo donu pluvon al la homa mondo. Tiam drako estis simbolo de la supernatura estaĵo. Kaj pli poste, ĝi fariĝis prapatro de la plej altaj regantoj kaj simbolis la absolutan aŭtoritaton de feŭda imperiestro. La imperiestro pretendis, ke li estas filo de la drako. Ĉiuj liaj vivbezonaĵoj portis la nomon drako kaj estis ornamitaj per diversaj drakofiguroj. Nun ĉie en Ĉinio videblas drako-ornamentaĵoj, kaj cirkulas legendoj pri drakoj.»

• English translation:

In many places in China, there were temples of the dragon-king. During times of drought, people would pray in the temples that the dragon-king would give rain to the human world. At that time the dragon was a symbol of the supernatural. Later on, it became the ancestor of the highest rulers and symbolised the absolute authority of the feudal emperor. The emperor claimed to be the son of the dragon. All of his personal possessions carried the name "dragon" and were decorated with various dragon figures. Now dragon decorations can be seen everywhere in China and legends about dragons circulate.

Education

The majority of Esperanto speakers learn the language through self-directed study, online tutorials, and correspondence courses taught by volunteers. In more recent years, teaching websites like lernu! have become popular.

Esperanto instruction is occasionally available at schools, including four primary schools in a pilot project under the supervision of the University of Manchester, and by one count at 69 universities.^[14] However, outside China and Hungary, these mostly involve informal arrangements rather than dedicated departments or state sponsorship. Eötvös Loránd University in Budapest had a department of Interlinguistics and Esperanto from 1966 to 2004, after which time instruction moved to vocational colleges; there are state examinations for Esperanto instructors.^[15][16] The SenateofBrazil passed a bill in 2009 that would make Esperanto an optional part of the curriculum in public schools. As of 2010 the bill has not yet been passed by the Chamber of Deputies.^[17][18][19]

Various educators have estimated that Esperanto can be learned in anywhere from one quarter to one twentieth the amount of time required for other languages.^[20] Claude Piron, a psychologist formerly at the University of Geneva and Chinese-English-Russian-Spanish translator for the United Nations, argued that Esperanto is far more intuitive than many ethnic languages. "Esperanto relies entirely on innate reflexes [and] differs from all other languages in that you can always trust your natural tendency to generalize patterns. [...] The same neuropsychological law [—called by] Jean Piaget generalizing assimilation—applies to word formation as well as to grammar."^[21]

The Institute of Cybernetic Pedagogy at Paderborn (Germany) has compared the length of study time it takes Francophone high school students to obtain comparable 'standard' levels in Esperanto, English, German, and Italian.^[22] The results were:

• 2000 hours studying German =
• 1500 hours studying English =
• 1000 hours studying Italian =
• 150 hours studying Esperanto.

It should be noted, however, that these figures can only reflect the respective learning difficulty of these languages for native French speakers. They should be compared to figures from other countries to allow for a more general perspective on the learning difficulty of Esperanto. (French and Italian, both being Romance languages, are much more closely related to each other than French is to English or German.)

Language acquisition

Four primary schools in Britain, with some 230 pupils, are currently following a course in "propedeutic Esperanto"—that is, instruction in Esperanto to raise language awareness and accelerate subsequent learning of foreign languages—under the supervision of the University of Manchester.^[23] Studies have been conducted in New Zealand,^[24] United States,^[25][26][27] Germany,^[28] Italy^[29] and Australia.^[30] The results of these studies were favorable and demonstrated that studying Esperanto before another foreign language expedites the acquisition of the other, natural, language. This appears to be because learning subsequent foreign languages is easier than learning one's first foreign language, while the use of a grammatically simple and culturally flexible auxiliary language like Esperanto lessens the first-language learning hurdle. In one study,^[31] a group of European secondary school students studied Esperanto for one year, then French for three years, and ended up with a significantly better command of French than a control group, who studied French for all four years. Similar results have been found for other combinations of native and second languages, as well as for arrangements in which the course of study was reduced to two years, of which six months is spent learning Esperanto.^[32]

Community

Geography and demography

Esperanto is by far the most widely spoken constructed language in the world.^[33] Speakers are most numerous in Europe and East Asia, especially in urban areas.^[34] Esperanto is particularly prevalent in the northern and eastern countries of Europe; in China, Korea, Japan, and Iran within Asia; in Brazil, Argentina, and Mexico in the Americas;^[35] and in Togo in Africa.^[36]

Number of speakers

An estimate of the number of Esperanto speakers was made by Sidney S. Culbert, a retired psychology professor at the University of Washington and a longtime Esperantist, who tracked down and tested Esperanto speakers in sample areas in dozens of countries over a period of twenty years. Culbert concluded that between one and two million people speak Esperanto at Foreign Service Level 3, "professionally proficient" (able to communicate moderately complex ideas without hesitation, and to follow speeches, radio broadcasts, etc.).^[37] Culbert's estimate was not made for Esperanto alone, but formed part of his listing of estimates for all languages of over 1 million speakers, published annually in the World Almanac and Book of Facts. Culbert's most detailed account of his methodology is found in a 1989 letter to David Wolff.^[38] Since Culbert never published detailed intermediate results for particular countries and regions, it is difficult to independently gauge the accuracy of his results.

In the Almanac, his estimates for numbers of language speakers were rounded to the nearest million, thus the number for Esperanto speakers is shown as 2 million. This latter figure appears in Ethnologue. Assuming that this figure is accurate, that means that about 0.03% of the world's population speaks the language. This is not Zamenhof's goal of a universal language, but it represents a level of popularity unmatched by any other constructed language.

Marcus Sikosek (now Ziko van Dijk) has challenged this figure of 1.6 million as exaggerated. He estimated that even if Esperanto speakers were evenly distributed, assuming one million Esperanto speakers worldwide would lead one to expect about 180 in the city of Cologne. Van Dijk finds only 30 fluent speakers in that city, and similarly smaller-than-expected figures in several other places thought to have a larger-than-average concentration of Esperanto speakers. He also notes that there are a total of about 20,000 members of the various Esperanto organizations (other estimates are higher). Though there are undoubtedly many Esperanto speakers who are not members of any Esperanto organization, he thinks it unlikely that there are fifty times more speakers than organization members.^[34]

Finnish linguist Jouko Lindstedt, an expert on native-born Esperanto speakers, presented the following scheme^[39] to show the overall proportions of language capabilities within the Esperanto community:

• 1,000 have Esperanto as their native language.
• 10,000 speak it fluently.
• 100,000 can use it actively.
• 1,000,000 understand a large amount passively.
• 10,000,000 have studied it to some extent at some time.

In the absence of Dr. Culbert's detailed sampling data, or any other census data, it is impossible to state the number of speakers with certainty. According to the website of the World Esperanto Association:

Numbers of textbooks sold and membership of local societies put the number of people with some knowledge of the language in the hundreds of thousands and possibly millions.^[40]

In 2009 Lu Wunsch-Rolshoven used 2001 year census data^[41] from Hungary^[42] and Lithuania as a base for an estimate, resulting in approximately 160,000 to 300,000 to speak the language actively or fluently throughout the world, with about 80,000 to 150,000 of these being in the European Union.

Native speakers

Ethnologue relates estimates that there are 200 to 2000 native Esperanto speakers (denaskuloj), who have learned the language from birth from their Esperanto-speaking parents.^[35] This usually happens when Esperanto is the chief or only common language in an international family, but sometimes occurs in a family of devoted Esperantists.^[43]

The most famous native speaker of Esperanto is businessman George Soros.^[40] Teodoro Schwartz, his father, was an Esperantist.^[40] Also notable is young Holocaust victim Petr Ginz, whose drawing of the planet Earth as viewed from the moon was carried aboard the Space Shuttle Columbia in 2003 (STS-107).

Culture

Esperanto speakers can access an international culture, including a large body of original as well as translated literature. There are over 25,000 Esperanto books, both originals and translations, as well as several regularly distributed Esperanto magazines. Esperanto speakers use the language for free accommodations with Esperantists in 92 countries using the Pasporta Servo or to develop pen pal friendships abroad through the Esperanto Pen Pal Service.^[44]

Every year, 1,500–3,000 Esperanto speakers meet for the World Congress of Esperanto (Universala Kongreso de Esperanto).^[45][46]

Historically, much Esperanto music, such as Kaj Tiel Plu, has been in various folk traditions.^[47] In recent decades, more rock and other modern genres have appeared, an example being that of the Swedish band Persone.^[48] There is also a variety of classical and semi-classical choral music, both original and translated, as well as large ensemble music that includes voices singing Esperanto texts. Lou Harrison, who incorporated styles and instruments from many world cultures in his music, used Esperanto titles and/or texts in several of his works, most notably La Koro-Sutro (1973). David Gaines used Esperanto poems as well as an excerpt from a speech by Dr. Zamenhof for his Symphony No. 1 (Esperanto) for mezzo-soprano and orchestra (1994–98). He wrote original Esperanto text for his Povas plori mi ne plu (I Can Cry No Longer) for unaccompanied SATB choir (1994).

There are also shared traditions, such as Zamenhof Day, and shared behaviour patterns. Esperantists speak primarily in Esperanto at international Esperanto meetings.

Detractors of Esperanto occasionally criticize it as "having no culture". Proponents, such as Prof. Humphrey Tonkin of the University of Hartford, observe that Esperanto is "culturally neutral by design, as it was intended to be a facilitator between cultures, not to be the carrier of any one national culture". The late Scottish Esperanto author William Auld has written extensively on the subject, arguing that Esperanto is "the expression of a common human culture, unencumbered by national frontiers. Thus it is considered a culture on its own."^[49] Others point to Esperanto's potential for strengthening a common European identity, as it combines features of several European languages.^{[citation needed]}

Famous authors in Esperanto

Some of the best-known authors of works in Esperanto are:

In popular culture

Esperanto has been used in a number of films and novels. Typically, this is done either to add the exotic flavour of a foreign language without representing any particular ethnicity, or to avoid going to the trouble of inventing a new language. The Charlie Chaplin film The Great Dictator (1940) showed Jewish ghetto shop signs in Esperanto, to create the atmosphere of some 'foreign' East European country without referencing any particular East European language. Road to Singapore (also 1940) has a song in Esperanto.

Two full-length feature films have been produced with dialogue entirely in Esperanto: Angoroj, in 1964, and Incubus, a 1965 B-movie horror film. Canadian actor William Shatner learned Esperanto to a limited level so that he could star in Incubus, although Esperantists have stated that he speaks the language with a French accent, something he may have picked up while studying at McGill University. In Fritz Lang's Metropolis (1927) shop and road signs in Esperanto appear in many background scenes.

Other amateur productions have been made, such as a dramatisation of the novel Gerda Malaperis (Gerda Has Disappeared). A number of "mainstream" films in national languages have used Esperanto in some way, such as Gattaca (1997), in which Esperanto can be overheard on the public address system. In the 1994 film Street Fighter, Esperanto is the native language of the fictional country of Shadaloo, and in a barracks scene the soldiers of villain M. Bison sing a rousing Russian Army-style chorus, the "Bison Troopers Marching Song", in the language. Esperanto is also spoken and appears on signs in the film Blade: Trinity.

In the British comedy Red Dwarf, Arnold Rimmer is seen attempting to learn Esperanto in a number of early episodes, including Kryten. In the first season, signs on the titular spacecraft are in both English and Esperanto.