Definition of "nutty" in English

adjective

1. Containing nuts.

   • This is a nutty chocolate bar.

2. Resembling or characteristic of nuts.

3. (slang) Barmy: eccentric, odd; crazy, mad, insane.

   • Near-synonyms: nuts; see also Thesaurus:insane
   • That student's parents seem to be nutty as a fruitcake.

4. (UK, Ireland, dated) Extravagantly fashionable.