Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Crazy; insane.
  • adj. Extremely enthusiastic: I'm nuts about opera.
  • interj. Used to express contempt, disappointment, or refusal.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Plural form of nut.
  • n. Testicles.
  • n. A hand that can be proven unbeatable even when the hand's holder does not know any of the hidden cards the other poker players involved in a hand hold or held.
  • adj. Insane, mad.
  • adj. Crazy, mad; unusually pleased or, alternatively, angered.
  • interj. Indicates annoyance, anger, or disappointment.
  • interj. Signifies rejection of a proposal or idea, as in forget it, no way, or nothing doing.
  • v. Third-person singular simple present indicative form of nut.

from the GNU version of the Collaborative International Dictionary of English

  • Crazy; loony; insane; batty; -- used in a predicate position, ususually in phrases such as to go nuts, went nuts, are you nuts?
  • interj. An expression of disapproval, defiance, or displeasure, as in: “Ah, nuts! My knife just broke.”

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. informal or slang terms for mentally irregular

Etymologies

From nut.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

Comments

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  • "Kick me in the nuts." - The Dudesons.

    March 1, 2009

  • Interesting short article on how/when nuts came to mean crazy.

    October 12, 2007

  • Stun in reverse.

    July 22, 2007

  • It was nuts for the crowd, though maybe not for the king's friends HF 29

    December 7, 2006