blow the gaff

idiom

Definition of blow the gaff

British slang
: to reveal a secret especially in a public way usually + on The report blows the gaff on a series of illegal actions by the government.

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blowth

blow the gaff

blow the lid off

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Cite this Entry

“Blow the gaff.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blow%20the%20gaff. Accessed 8 Aug. 2022.

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