throw a monkey wrench into [sth]v exprverbal expression: Phrase with special meaning functioning as verb--for example, "put their heads together," "come to an end."
US, figurative, slang (disrupt) (俚语)
破坏 pò huài
打乱 dǎ luàn
搅扰 jiǎo rǎo
He was spiteful and enjoyed throwing a monkey wrench into their plans whenever he could.