nuts

adjective

Extremely foolish, mad, or intensely enthusiastic; also, very annoying.

"Are you completely nuts to suggest that?"

noun

The edible kernels of certain fruits, often enclosed in a hard shell.

"She enjoys eating mixed nuts as a snack."

Thesaurus

Synonyms: fruity, kooky, balmy, buggy, loopy, bats, whacky, wacky, loony, barmy, around the bend, loco