put/throw a spanner in the works

idiom

Definition of put/throw a spanner in the works

informal
: to cause something to not go as planned We were ready to start the project when the bank threw a spanner in the works by denying the loan.

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“Put/throw a spanner in the works.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/put%2Fthrow%20a%20spanner%20in%20the%20works. Accessed 24 Nov. 2020.

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