adj
daft
dahft
adj
1
Foolish, silly, or lacking good sense.
"Don't be daft — of course I'll help you move house."
"It was a daft idea to go hiking without checking the weather first."
2
Mentally unwell or acting irrationally; crazy.
"He went a bit daft after losing his job, spending money he didn't have."
How to Use Daft
Learner’s notesIn plain EnglishFoolish or silly — a very common British English word for something (or someone) not very sensible.
UK vs US
Common and casual in British English; American speakers would more likely say "silly" or "crazy."
Common pairings
a daft idea
don't be daft
daft as a brush
Word Forms
dafter comparative, daftest superlative
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Etymology
From Old English dæfte, meaning "gentle" or "mild" — the meaning shifted over centuries from "meek" to "foolish," in a similar way to how "silly" once meant "innocent" but now means "foolish."