Meaning of “nuts” in the English Dictionary

"nuts" in American English

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nutsadjective [ not gradable ]

us /nʌts/ infml

crazy, foolish, or strange:

You’re nuts if you think you can go mountain climbing in a snowstorm.

If you are nuts about or nuts over someone or something, you are very enthusiastic about that person or thing:

He’s nuts about his new granddaughter.

(Definition of “nuts” from the Cambridge Academic Content Dictionary © Cambridge University Press)