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English definition of “vain”

vain

adjective uk   /veɪn/ us  

vain adjective (NOT SUCCESSFUL)

C2 unsuccessful; of no value: The doctors gave him more powerful drugs in the vain hope that he might recover.formal It was vain to pretend to himself that he was not disappointed.Useless and futile in vain C1 unsuccessfully: I tried in vain to start a conversation. All the police's efforts to find him were in vain.Useless and futileUnsuccessful (people and things)

vain adjective (SELFISH)

C2 too interested in your own appearance or achievements: He was very vain about his hair and his clothes.Showing arrogance and conceitConfidence and self-assuranceBoasting
(Definition of vain from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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