ENGLISH
REFERENCE

throw a wrench in

idiom
Meaning

To introduce a problem, dilemma or obstacle in; to complicate.


Origin

disputed origin

See throw a wrench in the works.

Examples
SIMPLE

The sudden rain threw a wrench in our picnic plans.

CONTEXTUAL

The unexpected arrival of extra guests threw a wrench in our dinner preparations, so we had to order pizza instead.

COMPLEX

His sudden resignation just days before the project deadline threw a wrench in the entire operation, forcing the team to work through the weekend to recover.

Anchors to
Related idioms8entries
  1. 01

    lock someone up and throw away the key

    To lock someone up in prison indefinitely.

  2. 02

    monkey wrench

    To introduce problems, to create unexpected trouble, to sabotage.

  3. 03

    stone's throw

    A short distance, roughly equivalent to how far a person can throw a stone.

  4. 04

    throw a bone to

    To provide support or assistance to, especially in one particular way or to a limited extent; to make a concession to.

  5. 05

    throw a fit

    To become angry, enraged, or upset; to act or react with an outburst, as by shouting, swearing, etc.

  6. 06

    throw a kiss

    To kiss one's hand, then make a gesture as if one was throwing the kiss in a direction towards the recipient.

  7. 07

    throw a monkey wrench in the works

    Synonym of throw a spanner in the works.

  8. 08

    throw a monkey wrench into the works

    Synonym of throw a spanner into the works.

Last updated April 17, 2026