- adjective useless, inferior. The word derives from a piece of 18th-century thieves’ jargon meaning worthless or counterfeit, related to duffer which originally denoted a seller of supposedly stolen goods.
- noun the backside, buttocks. Duff is a 19th-century word for boiled dumpling or pudding (surviving in the British ‘plum duff’), from which this usage was probably derived.
(written as DUFF)an unattractive female. The letters stand for ‘designated ugly fat friend’. Pronounced as a word, not letter by letter, this pejorative epithet has been used by younger males since around 2000.
- verb to steal. A verb formed from the generalised negative sense of duff. The usage is now fairly rare.
- acronym fordesignated ugly fat friend
(written as DUFF)