go crazy

idiomatic phrase

1
: to become mentally unsound
I must be going crazy. I can't find my car keys anywhere.
not used technically
2
: to act in a way that is out of control : to act wildly
We were just talking when he suddenly went crazy and started screaming.
The crowd went crazy when the team won the championship.

Examples of go crazy in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Conair offers the basics with their microdermabrasion kit, with two abrasive tips and two pore vacuums—but remember to heed Dr. Shirazi’s waring and don’t go crazy with the pore sucking. Conçetta Ciarlo, Vogue, 8 Aug. 2025 Superfans of Wallen and Wilson will go crazy for seeing many of their favorites' recent award show and concert tour looks in shadowboxes on display. Marcus K. Dowling, The Tennessean, 26 July 2025 Fans in Caesar’s Palace went crazy for the moment live, but many hardcore fans who had grown tired of Hogan’s act consider this—well—a black eye on the history of WrestleMania. 6. Alfred Konuwa, Forbes.com, 24 July 2025 Except for this one man, the evidence of the warlords and Japan going crazy had been horribly apparent. Charles Pellegrino, Rolling Stone, 6 Aug. 2025 See All Example Sentences for go crazy

Word History

First Known Use

1743, in the meaning defined at sense 2

Time Traveler
The first known use of go crazy was in 1743

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Cite this Entry

“Go crazy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/go%20crazy. Accessed 25 Aug. 2025.

Last Updated: - Updated example sentences
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