Meaning

adjective having the flavor of nuts

adjective informal or slang terms for mentally irregular

originEtymology tree Proto-Germanic *hnuts Proto-West Germanic *hnut Old English hnutu Middle English note English nut Proto-Indo-European *-kos Proto-Germanic *-gaz Proto-West Germanic *-g Old English -iġ Middle English -y English -y English nutty From nut + -y.

Etymology from Wiktionary, CC BY-SA 3.0