throw a monkey wrench in the works
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English[edit]
Alternative forms[edit]
Verb[edit]
throw a monkey wrench in the works (third-person singular simple present throws a monkey wrench in the works, present participle throwing a monkey wrench in the works, simple past threw a monkey wrench in the works, past participle thrown a monkey wrench in the works)
- (idiomatic, US) Synonym of throw a spanner in the works.