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English definition of “put/throw a spanner in the works”

put/throw a spanner in the works

(US throw a (monkey) wrench in the works)
to do something that prevents a plan or activity from succeeding: The funding for the project was withdrawn so that really threw a spanner in the works.
(Definition of put/throw a spanner in the works from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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Translations of “put/throw a spanner in the works”

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