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Synonyms

haywire

American  
[hey-wahyuhr] / ˈheɪˌwaɪər /

noun

  1. wire used to bind bales of hay.


adjective

Informal.
  1. in disorder.

    The town is haywire because of the bus strike.

  2. out of control; disordered; crazy.

    The car went haywire. He's been haywire since he got the bad news.

haywire British  
/ ˈheɪˌwaɪə /

adjective

  1. (of things) not functioning properly; disorganized (esp in the phrase go haywire )

  2. (of people) erratic or crazy

"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

haywire Idioms  
  1. see go haywire.


Etymology

Origin of haywire

First recorded in 1900–05; hay + wire

Explanation

When something goes haywire, it's out of control or completely chaotic. You'll sense that things have gone haywire at a birthday party if suddenly the young guests are having a crazed water gun fight indoors. A riot is an extreme example of things going haywire, when people get angry enough about something that they ignore rules and laws, breaking windows and setting things on fire. A less serious case of things gone haywire could be a flock of chickens escaping an enclosure, running loose in your vegetable garden. The literal, and original, meaning of haywire is "wire used to bind hay." The wire's "springy unpredictability" led to today's common definition.

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Vocabulary lists containing haywire

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.

The plunge in stocks — by about 30% in less than three weeks — sent their portfolio balances haywire.

From MarketWatch • Nov. 24, 2025

Both teams were more stable in the second half, with far fewer chances in comparison to the haywire first period.

From Barron's • Nov. 9, 2025

But first, they share their latest triumphs and fails, where a day off for Lucy’s daughter goes haywire, Zak enjoys a peaceful morning, and Elizabeth learns about Italy’s bus system the hard way.

From Slate • Nov. 6, 2025

But the women she’s asked are all in varying degrees of troubled transition, including but not limited to haywire hormones.

From Los Angeles Times • Oct. 29, 2025

I think it was there that I went haywire.

From "Travels with Charley in Search of America" by John Steinbeck

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