put a wrench in(to) (something)

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put a wrench in(to) (something)

To disrupt, foil, or cause problems to a plan, activity, or project. We had everything in line for the party, but having the caterer cancel on us at the last minute really put a wrench in things! It'll really put a wrench into our plans if the board decides not to increase our funding for this project.
See also: put, wrench
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.