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nutso

British  
/ ˈnʌtsəʊ /

adjective

  1. informal insane

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

I know, I know: college football is always pretty nutso.

From The Wall Street Journal • Oct. 20, 2025

None of which is to say that “The Appointment,” whose nutso musical numbers are choreographed by Melanie Cotton, is bummer theater.

From New York Times • Jan. 24, 2023

And I love Owen in “Throw Momma from the Train” because there’s just something so vulnerable and nutso at the same time.

From Washington Post • Aug. 31, 2022

With this noisy, nonsensical, nutso movie careening, crazy-eyed onto a cinematic freeway otherwise choked with interchangeably airless superhero properties, this most inessential of blockbuster filmmakers has suddenly proved himself weirdly valuable.

From Los Angeles Times • Apr. 8, 2022

Pretty nutso sometimes, but you could trust him with your life.

From "The Things They Carried" by Tim O'Brien