Definition, Meaning & Synonyms
to throw a spanner in the works
idiom
/tə θroʊ ə ˈspænər ɪn ðə wɜrks/

Definition
To cause a disruption or interference in a plan or process.

Examples
- The sudden resignation of the team leader really threw a spanner in the works of the project.
- When the supplier missed the deadline, it threw a spanner in the works for the entire event schedule.

Meaning
This phrase is used when something unexpected complicates or hinders an ongoing situation.

Synonyms
- to interfere
- to complicate
- to disrupt