idiominformal(UKalsobe all mouth and no trousers)totalka lot about doing something but never do it:只说不做He says he's going tocomplainto themanager, but he's allmouth.他说他要向经理鸣不平,但我认为他不过是说说而已。SMART Vocabulary: related words and phrasesTalkative and eloquent
articulate
articulately
articulateness
cry
eloquence
eloquently
expressive
fluency
fluent
loquacious
loquaciously
loquacity
lucid
lucidity
lucidly
oracy
silver-tongued
the gift of the gabidiom
turn of phrase
voluble
See more results ?(Definition ofbe all mouthfrom theCambridge Advanced Learner's Dictionary & Thesaurus? Cambridge University Press)#https://dictionary.cambridge.org//dictionary/english/be-all-mouth##