The nuqta (Hindi: नुक़्ता, Urdu: نقطہ, romanized: nuqtā; sometimes also spelled nukta), is a diacritic mark that was introduced in Devanagari and some other Indic scripts to represent sounds not present in the original scripts.[A][1] It takes the form of a dot placed below a character. This idea is inspired from the Arabic script; for example, there are some letters in Urdu that share the same basic shape but differ in the placement of dots(s) or nuqta(s) in the Perso-Arabic script: the letter ع ayn, with the addition of a nuqta on top, becomes the letter غ g͟hayn.[2]
The term nuqtā (नुक़्ता) is itself an example of the use of the nuqta (making it autological.) Other examples include क़िला (Urdu: قلعہ), qilā, 'fortress'; and आग़ा ख़ान (Urdu: آغا خان), Āġā K͟hān, a combination of a Perso-Arabic (āġā) and a Türko-Mongolic (k͟hān) honorific.
The nuqta, and the phonological distinction it represents, is sometimes ignored in practice; e.g., क़िलाqilā being simply spelled as किलाkilā. In the text Dialect Accent Features for Establishing Speaker Identity, Manisha Kulshreshtha and Ramkumar Mathur write, "A few sounds, borrowed from the other languages like Persian and Arabic, are written with a dot (bindu or nuqtā). Many people who speak Hindi as a second language, especially those who come from rural backgrounds and do not speak conventional Hindi (also called Khaṛībōlī), or speak in one of its dialects, pronounce these sounds as their nearest equivalents." For example, these rural speakers will assimilate the sound ɣ (Devanagari: ग़; Nastaliq: غ) as ɡ (Devanagari: ग; Nastaliq: گ).[3]
With a renewed Hindi–Urdu language contact, many Urdu writers now publish their works in Devanagari editions. Since the Perso-Arabic orthography is preserved in Nastaʿlīq script Urdu orthography, these writers use the nuqta in Devanagari when transcribing these consonants.
Devanagari also includes coverage for the Dravidian consonants ऴ, ḻa /ɻ/; ऱ, ṟa /r/ and ऩ, ṉa /n/. (Respectively, these letters modify ळ, ḷa /ɭ/; र, ra /ɾ/ and न, na /n̪/). An example is तमिऴ् /t̪amiɻ/ (Tamil: தமிழ்), tamiḻ.
To represent the Eastern Nagari letter য় representing /e̯ɔ/, the consonant य़, ẏa is used in Devanagari.
InMaithili, there are four non-syllabic vowels: i̯, u̯, e̯, o̯ written in Devanagari as य़, व़, य़ॆ, व़ॊ. But colloquially, these are written without nuqta.
The Bengali-Assamese script has ড় ঢ় য়, which are variations of ড ঢ য; however, ব and র are completely different in nature.
InThaana script of Maldives, one or many nuqtas are added to their native consonants to represent Perso-Arabic consonants, and each phoneme is encoded as a whole in the Unicode block (instead of a separate codepoint for the diacritic).
^Kulshreshtha, Manisha; Mathur, Ramkumar (24 March 2012). Dialect Accent Features for Establishing Speaker Identity: A Case Study. Springer Science & Business Media. p. 19. ISBN978-1-4614-1137-6. A few sounds, borrowed from the other languages like Persian and Arabic, are written with a dot (bindu or nukta) as shown in Table 2.2.
