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English definition of “be all mouth”

be all mouth

(UK also be all mouth and no trousers) informal
to talk a lot about doing something but never do it: He says he's going to complain to the manager, but I reckon he's all mouth.Talkative and eloquent
(Definition of be all mouth from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Translations of “be all mouth”

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