• synonyms

throw a monkey wrench into

Sabotage or frustrate a project or plans, as in The boss threw a monkey wrench into our plans when he said we'd have to work Saturday. This transfer of industrial sabotage—that is, throwing a tool inside machinery—to other subjects dates from the early 1900s.


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obstruct, hinder, wreck, subvert, cripple, vandalize, destroy, disrupt, hamper, undermine, torpedo, thwart, stonewall, foil, stall, impede, crimp, do, frustrate, attack

Nearby words

throughway, throve, throw, throw a curve, throw a fit, throw a monkey wrench into, throw a party, throw a punch, throw about, throw away, throw back
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.