Daniel Cassidy (1943 – October 11, 2008) was an American writer, filmmaker, musician, and academic.[1] He is known for his 2007 book How the Irish Invented Slang in which he suggests that many American slang words are of Irish origin.[1] His theories have, however, not stood up to academic scrutiny and are considered factually incorrect.[2][3]
In 1995, he founded and co-directed the Irish Studies program at New College of California.[1] In 2007 The magazine Irish America designated him as being among the most influential Irish Americans of the year.[1]
In his 2007 book How the Irish Invented Slang, Cassidy maintains that many common American slang words are of Irish origin, with the word dude for example being derived from "dúid" (meaning "foolish-looking fellow")[4] and snazzy coming from "snasach" (meaning "polished, elegant").[4] Among other hundreds of other words he mentions are jazz, poker, sucker, and scam.[1] Cassidy proposes that since Irish immigrants were a marginalized group[5] their influence on English would mainly be found in lower-status or colloquial slang expressions,[3] leading them to be overlooked by mainstream dictionaries.[3]
His etymological theories have not stood up to academic scrutiny and are considered factually incorrect[6] and wishful thinking.[7] The book relies almost entirely on phonetic similarity,[5] finding coincidences where sound and meaning happen to look similar.[3] It did not include historical analysis.[3][6] Among those who have criticized his theories as being completely wrong are American lexicographer Grant Barrett[6] and Irish lexicographer Terence Dolan, Professor of Old and Middle English at University College Dublin.[7]
Cassidy could speak no Irish when beginning this project.[8]
"Dan Cassidy" was released by Little David Records (LD 1002) in 1972. Billboard said, "Dan Cassidy projects an immense strength and a rare understanding of the human predicament circa early 1970s on this his initial album effort. He's seen his share of the unpretty side of life and his lyrics reflect this with the utmost sincerity and compassion."[9]
^ abcdeMacDougall, Heather (Fall 2007). "Review of How the Irish Invented Slang: The Secret Language of the Crossroads". The Canadian Journal of Irish Studies. 33 (2): 74. doi:10.2307/25515689. JSTOR25515689.
