throw a monkey wrench in the works

== English == === Alternative forms === throw a wrench into the works === Verb === 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. ==== Related terms ==== throw a wrench in