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throw a spanner in the works

Verb CEFR C2

Definitions

To introduce a problem, dilemma or obstacle, something unexpected or troublesome.

UK, idiomatic

Equivalents

3 more languages

Examples

“Halfway through the production of Macbeth, the director found that the stage⟳ was smaller than he had expected. This really threw a spanner in the works.”

CEFR level

C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
See all C2 English words →

See also

throw a sprat to catch a mackerel throw a tantrum throw a wet blanket on throw a wobbly throw a wrench in throw a wrench in the gears

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