English

Definition of duff adjective from the Oxford Advanced Learner's Dictionary

 

duff

 adjective
adjective
BrE BrE//dʌf//
 
; NAmE NAmE//dʌf//
 
 
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(British English, informal) useless; that does not work as it should He sold me a duff radio. Word Originadjective late 18th cent. (denoting something worthless): of unknown origin.

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