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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.

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New England—proud, pampered, ring-hoarding New England, the most-decorated franchise in recent NFL history—is but a single victory away from yet another Super Bowl appearance and driving the rest of the league absolutely nutso.

From The Wall Street Journal Jan. 19, 2026

Danny: That’s what I am, vulnerable and nutso.

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

“But I’m also a world-class lollygagger. I really would prefer nutso to do.”

From New York Times May 26, 2018

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

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

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