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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.

Keep Reading on Vocabulary.com

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.

See Examples For:

Lacy laughs about it now, as a consequence of just how haywire that time was — for him, and everyone.

From Los Angeles Times Jul. 22, 2026

"We noticed our fan would go haywire at 5 Shaft. Some areas would show reduced or even reversed airflow during large rain events," Connot said.

From Science Daily Jul. 6, 2026

"When regulatory measures are in place, things work out, and when there aren't, everything goes haywire," Cecile Duflot, Executive Director of Oxfam France, told a press conference.

From Barron's Jun. 9, 2026

Your mind plays all kinds of tricks on you when geopolitical events go haywire.

From The Wall Street Journal Apr. 17, 2026

I try to follow his words, but my thoughts are going haywire.

From "Divergent" by Veronica Roth

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