be at a loss Definition in the Cambridge English Dictionary
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Definition of “be at a loss” - English Dictionary

Definition of "be at a loss" - British English Dictionary

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be at a loss

C2 not to ​know what to do or say: I'm at a loss to ​know how I can ​help you. It was ​unlike him to be at a loss for words.
(Definition of be at a loss from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
Translations of “be at a loss”
in Chinese (Simplified) 不知所措, 不知说什么…
in Chinese (Traditional) 不知所措, 不知說甚麽…
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