θroʊ ə ˈspænər ɪn ðə wɜːrks
Work
informal
intermediate
- Literally:
- Throwing a tool into machinery
What does "throw a spanner in the works" mean?
- To cause problems that prevent success
- To sabotage or disrupt plans
Examples
- The weather threw a spanner in the works.
- His resignation threw a spanner in the works.
- Don't let this throw a spanner in the works.
Origin
From the damage a spanner (wrench) would cause if thrown into machinery. British expression; Americans say 'wrench'.
How to use it
British expression also used in Canada. American version uses 'wrench'.
Similar expressions
cause problems
disrupt
sabotage
wreck plans
Opposites
help things along
facilitate
smooth the way
Related idioms
- hit the nail on the head
To describe exactly what is true or important
- call it a day
To stop working for the day
- have one's hands full
To be very busy with something
- learn the ropes
To learn the basics of a job or activity
- it's not rocket science
It's not difficult to understand or do
- get your act together
To organize yourself and start behaving more responsibly
Use it in a practice answer
Try "throw a spanner in the works" in a CELPIP-style Speaking or Writing task. The AI feedback tells you whether your word choice worked.