Unknown. Suggested origins, none of which are accepted by mainstream lexicographers, include:
- from Romani mol (“have value, be worth”)
- from Irish moll óir (“heap of gold”) However, this is unlikely because of the difference in pronunciation.
- from French moulin (“mill”)
- from Sanskrit मूल (mūla, “capital, principal”)
- coined by Chuck Green, a friend of Damon Runyon
- (UK) Lua error in Module:IPA/tracking at line 58: attempt to index global 'tracking' (a nil value)
- Lua error in Module:IPA/tracking at line 58: attempt to index global 'tracking' (a nil value)
- Rhymes: -uːlə
- Rhymes: -uːlə(r) (in non-rhotic accents)
- ^ Oxford English Dictionary, 2nd Ed.
- ^ Henry Hitchings, The Secret Life of Words: How English Became English ISBN 0374254109, page 323
- ^ Daniel Cassidy, The Secret Language of the Crossroads: How the Irish Invented Slang
- ^ Attributed to Mario Pei by William Safire, 6/8/2003 "On Language" column in the New York Times.