From Longman Dictionary of Contemporary Englishdaftdaft /dɑːft $ dæft/ adjective especially British English 1 STUPID/NOT SENSIBLEsilly a daft idea Me, jealous? Don’t be daft (=that is a silly idea). She’s as daft as a brush (=extremely silly).► see thesaurus at stupid2 → be daft about something —daftness noun [uncountable]
Examples from the Corpus
daft• She's as daft as a brush, honestly she is.• It rises with the tide, only no one's so daft as to stay and see how high.• It's the hangover from twenty-four hours of daft behaviour.• But she had some daft ideas about this place.• Is this another of your daft ideas?• Don't be daft! Of course you're not too old to go clubbing.• Before, I'd felt little resentment and shrugged off being labelled daft or deaf, never needing to cry in front of them.• Would he really countenance such a daft proposal?• Excuse me while I dive back into my piles of daft statistics.• But it was a daft thing to ask, wasn't it?• What a daft thing to say!• Well, what's the daftest thing you've ever done at work?• And it's particularly daft when the firm itself has gone bust.Origin daft Old English gedæfte “gentle” 