Definitions

1. adjective

crazy or eccentric, often in a charming or amusing way; having or showing a quirky or unconventional personality

“She’s a bit nutty, but we love her for it.”

2. adjective

fond of or enthusiastic about nuts, especially peanuts or walnuts

“He’s a bit nutty for peanut butter.”

3. adverb

in a crazy or eccentric way; in a quirky or unconventional manner

“He lives life very nutty, never knowing what’s next.”