nutso

N1U1T1S1O1
US/ˈnʌ.t͡soʊ/UK/ˈnʌt.soʊ/

adjective

Crazy, insane.

RareScrabble 5

Meanings

adjectivenutso (comparative more nutso, superlative most nutso)

comparative more nutso · superlative most nutso · alternative nutzo

  1. colloquialCrazy, insane.

    "I was wondering if you had any crazy nutso guy stalking you, or something."

    2005, G. R. Kirby, Sow the Storm
    2 more examples

    "You wanted a report, so here's a full report: crazy, nutso, raisins short of a fruitcake, rubber walls, screaming-mad basket-cases."

    2000, Zadie Smith, White Teeth, London: Hamish Hamilton, →ISBN

    "It's a bit scary if you have a difficult boss, and it's out-and-out frightening if you have a completely nutso, maladjusted, irrational, or disturbed boss."

    2000, Robert Bacal, The Complete Idiot's Guide to Dealing With Difficult Employees
  2. colloquialFraught or out of control.

    I put my hand to my chest—my heart was going nutso.

    2010, Alison Seay, Your Mom's a Vampire!, page 1
    3 more examples

    How being taught to not cut corners, even in a nutso emergency room shift, meant I checked all regions in Mary below the waist and didn't just tell her I thought it was probably gas.

    2005, Phyllis Hollenbeck, Sacred Trust: The Ten Rules of Life, Death, and Medicine, →ISBN, page 40

    A nutso relationship is no joke, and no baby should be exposed to that.

    2013, Tracy Moore, Oops! How to Rock the Mother of All Surprises, →ISBN, page 114

    In 1969, one of the wire spoolers goes nutso, breaks off its mooring, the wire lashing about like a horse's tail trying to chase away a fly.

    2013, Chuck Wendig, Unclean Spirits, →ISBN
  3. colloquialObsessed; overly enthusiastic.

    I'm nutso about AnnRice, R.L. Stine, Dean Koontz.

    2002, Pamela Hayes, The Lie, →ISBN
    3 more examples

    Even the most nutso fisherman would think twice about going out on the lake today.

    2001, Kathryn North, Proud Mari, →ISBN, page 7

    My dad wants to send heirloom tomato seeds there. He's nutso about tomatoes.

    2011, Laird Foster, The Lux Proofs, →ISBN, page 287

    Don't get scared when Dani goes nutso over decorations— it's normal and then they change back.

    2013, Cindi Madsen, Falling For Her Fiance (Entangled Bliss), →ISBN
  4. colloquialRidiculous; unbelievable or silly.

    She made us go through this nutso warrior ceremony.

    2010, John O'Keefe, The Spread, →ISBN, page 253
    3 more examples

    Forget the mechanical, materlial, solid model of communication, bring in the invisible but very real web rings. Internet, hacking and so on; puerile conversations of chat pages, insane obsessions with nutso things.

    2000, Finola Moorhead, Darkness More Visible, →ISBN, page 133

    Trust me, we both can find fringe fanatics to prove the other side is nutso. So let's stop with this stereotypical silliness.

    2008, Becky Garrison, The New Atheist Crusaders and Their Unholy Grail, →ISBN, page 55

    This is a nutso project they've taken on, but it's their nutso project, not ours.

    2009, Sally John, Gary Smalley, A Time to Surrender, →ISBN, page 30
nounnutso (countable and uncountable, plural nutsos)

plural nutsos · alternative nutzo

  1. colloquialcountableA crazy person; a crackpot or lunatic.

    Why give even one minute to this head-meddling nutso?

    2014, David Mitchell, The Bone Clocks, →ISBN, page 417
    2 more examples

    You know, some computer nerd rapist killer nutso builds a fantasy around her, crashes a party whereshe's supposed to be, she laughs himoff, says she'd rather be fuckin' her girlfriends than a pimply little freak--

    2001, John Sandford, Easy Prey, →ISBN

    Sadly, at the end of his life, Luther became somewhat of a nutso.

    2012, A. J. Swoboda, Messy: God Likes It That Way, →ISBN, page 143
  2. colloquialuncountableCraziness; insanity.

    I knew she was a crazy bitch, but this is a whole new level of nutso.

    2014, S.P. Durnin, Keep Your Crowbar Handy, →ISBN
    1 more example

    I wrote a letter to the Guild Newsletter apologizing for having disrupted the show, pleading temporary nutso.

    2012, Harlan Ellison, An Edge in My Voice, →ISBN
adverbnutso (comparative more nutso, superlative most nutso)

comparative more nutso · superlative most nutso · alternative nutzo

  1. colloquialMadly; extremely or obsessively.

    I'm completely, utterly, nutso in love with that man!

    2012, Susan Donovan, He Loves Lucy, →ISBN
  2. colloquialIn a crazy manner.

    In there was Captain Ed Cutler, whom every man and woman in Maggie's old command had once seen run nutso in Valhalla.

    2014, Stephen Baxter, Terry Pratchett, The Long Mars, →ISBN
    1 more example

    I'm working at the ink-jet machine running a job...then I hear a weird noise I but I can't really tell what it is over the sound of the machine right.. .then I think I hear a whimper...all of a sudden my step mom bursts out from her office all nutso saying..."where is your father, where is your father"

    2006, Michael Amore, Loosely Based On Last Thursday, →ISBN, page 102

Synonyms & antonyms

Also see

Origin

  1. Englishnuts
  2. Latinō
  3. Old Frenchoh
  4. Middle Englisho
  5. EnglishO
  6. Middle Englisho
  7. Englishoh
  8. Englishnutso

From nuts + -o.

Full word history & related roots →

Rhymes & wordplay

Anagrams

Cite this entry
APA

nutso. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/nutso

MLA

“nutso.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/nutso. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “nutso,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/nutso.

Source: nutso on Wiktionary, CC BY-SA 4.0.