Definition
nounLanguage outside of conventional usage and in the informal register.
nounLanguage that is unique to a particular profession or subject; jargon.
Sentence Examples
Don't use slang if you can help it.
It's fun to learn slang words in foreign languages.
Word Origin & History
First use appears c. 1756, meaning "special vocabulary of tramps or thieves", origin unknown. Not believed to be connected with language or lingo.
Possibly derived from a North Germanic source, then possibly related to Nordic language: Danish slænge, Icelandic and Norwegian Nynorsk slengja, Norwegian slenge, Swedish slänga (“to (carelessly) sling, throw, hurl; throw away, to dispose of; to flail”), with derivational nouns such as slæng, sleng, släng etc. Compare the compound: Danish slængenavn, Norwegian slengenavn, Norwegian Nynorsk slengenamn, Swedish slängnamn (“nickname, byname, informal name”, literally “sling-name”), and the phrases: Norwegian Nynorsk slengja kjeften, Swedish slänga käften (“to abuse verbally”, literally “to sling one's jowl”), Swedish slänga ur sig (“to say something hastily, carelessly, thoughtlessly”, literally “to throw out of oneself”), also Swedish (regional) slänga (“careless, nonchalant girl”, literally “sling + feminine suffix -a”).
Literary Quotations & Historical Citations
"She was amused by his talk, which was simple, straightforward, rather humorous and keen, and interspersed with homely expressions of a style which is sometimes called slang."
— 1848 November – 1850 December, William Makepeace Thackeray, chapter 26, in The History of Pendennis. […], volume (please specify |volume=I or II), London: Bradbury and Evans, […], published 1849–1850, →OCLC:
"English-speaking Australians have always had a love affair with slang."
— 1996, James Lambert, The Macquarie Book of Slang, Sydney: Macquarie Library, page v:
"After years when I met a friend inside the aircraft and could sense stiffness in the conversation, a whiff of mild slang was the ice breaker, followed by loads of campus nostalgia."
— 2021 September 3, Charudutta Panigrahi, “The Intimacy Of Slangs”, in Odisha News, archived from the original on 19 Mar 2025:
""Oh, there are so many superior teas and sugars now. Superior is getting to be shopkeepers' slang. / "Are you beginning to dislike slang, then?" said Rosamond, with mild gravity. / "Only the wrong sort. All choice of words is slang. It marks a class." / "There is correct English: that is not slang." / "I beg your pardon: correct English is the slang of prigs who write history and essays. And the strongest slang of all is the slang of poets.""
— 1871, George Eliot [pseudonym; Mary Ann Evans], chapter XI, in Middlemarch […], volume I, Edinburgh; London: William Blackwood and Sons, →OCLC, book I, page 172:
"[F]or a detailed analysis see Liberman (2008 157ff) who sees it as one of a number of terms found in pan-European slangs meaning concealment and/or cheating."
— 2023, Jonathon Green, Green’s Dictionary of Slang: