What does daft mean?
"Daft" is an informal adjective meaning silly, foolish, or slightly mad, used overwhelmingly in British and Irish English. It carries a light, often affectionate connotation: describing someone as daft suggests harmless eccentricity or poor judgment rather than genuine stupidity or mental illness. A person might be "daft enough to walk to work in the rain," or an idea might be dismissed as "completely daft." The word's history is surprisingly gentle — in Old English it meant meek or mild-mannered, and over the centuries this sense of softness shaded into simple-mindedness and then into playful madness. Common fixed expressions include "daft as a brush," a fond British idiom for a lovable fool. Though rarely heard in everyday American speech, "daft" is widely recognized thanks to its frequent appearance in British comedy, literature, and media, making it a useful word for readers of British English.
Informal: silly, foolish, or crazy, often in an amusing or endearing way.
"She must have been daft to lend her car to someone she'd just met."
Chiefly British and Irish; typically affectionate rather than harsh.
Archaic: gentle, meek, or mild-mannered.
"In older texts, a daft maiden was one who was soft-spoken and modest."
This original sense is now obsolete and appears only in historical literature.
"Daft" once meant the opposite of what you'd expect — it originally described someone gentle and meek before centuries of use turned 'mild-mannered' into 'mad as a hatter.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of daft
"Daft" descends from the Old English word "dæfte," which meant gentle, meek, or mild — a sense preserved in related words like "daff" and "doff." Over the Middle Ages the meaning shifted from gentleness to simplicity and then to foolishness or madness, a common semantic path for words describing mild temperament. Its closest relatives are other native Germanic words such as "daff" and the later coinage "daffy," all stemming from the same Old English root.
Related word forms
How daft is actually used
Predominantly informal and conversational, and far more common in Britain and Ireland than in North America. Often used affectionately rather than insultingly — calling someone daft can imply charming silliness. In American English it is understood but rare.
Easily confused with daft
"Deft" means skillful and quick-handed, while "daft" means silly or foolish — near-opposite meanings despite similar spelling.