throws a wrench in the works
Causes unexpected problems
To throw a wrench in the works is to disrupt a plan or process that was running smoothly.
The image is of a tool falling into machinery and jamming the gears.
Everything was on schedule until the permit delay threw a wrench in the works.
The British equivalent uses spanner: throw a spanner in the works.
- meddlingIntrusive interference in others' concerns
- monkey businessDeceitful or frivolous conduct
- jammingBlocking or wedging forcefully
- failureLack of success
- misalignmentImproper positioning relative to reference
obstruction · road block · derailment · clogging · gums up · sabotage · complication · best laid plans · frustration · intervention · game changer · incompatibility · snag · delay · miscommunication · spanner · fly in the ointment · upset the apple cart
throws a wrench in the worksfacilitates
Makes more possible
paves the way · enables · assists · expedites · streamlines
throws a wrench in the workslends a hand
Provides willing assistance
pitches in · backs up · supports · assists · helps out
throws, thrown, throwing, thrower, wrench, wrenches, wrenched, wrenching, workers