Definition of guff noun from the Oxford Advanced Learner's Dictionary

 

guff

 noun
noun
BrE BrE//ɡʌf//
 
; NAmE NAmE//ɡʌf//
 
[uncountable](informal)
 
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ideas or talk that you think are stupid synonym nonsense He gave me a load of guff about how his wife didn’t understand him. Word Origin early 19th cent. (in the sense ‘puff, whiff of a bad smell’): imitative.
See the Oxford Advanced American Dictionary entry: guff