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Definition

To introduce problems, to create unexpected trouble, to sabotage.

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Origins

Already in use, and not unfamiliar among mechanics, by 1832; see discussion and references at Monkey wrench § Etymology and history.

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In Context

  • "I think it’s possible that [US Vice President J.D.] Vance didn’t intend to monkey wrench [the meeting with US President Donald Trump and Ukrainian President Volodymyr Zelensky]."
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Related Idioms

b

be one's own worst enemy

To act contrary to one's own interests; to cause problems for oneself;…

 t

throw a monkey wrench in the works

Synonym of throw a spanner in the works.

 t

throw a monkey wrench into the works

Synonym of throw a spanner into the works.

 t

throw a wrench in

To introduce a problem, dilemma or obstacle in; to complicate.

 t

trouble in paradise

An unexpected problem in a supposedly positive situation, especially i…

 t

trouble at mill

Problems outside the household, especially in the workplace.
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