not know what hit you Meaning in the Cambridge English Dictionary
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Meaning of “not know what hit you” in the English Dictionary

"not know what hit you" in British English

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not know what hit you

to ​feelshocked or ​confused because something ​bad has ​happened to you ​suddenly when you were not ​expecting it
(Definition of not know what hit you from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"not know what hit you" in American English

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not know what hit you

to be ​suddenlyshocked and ​confused by something: When he said I was ​fired, I didn’t know what ​hit me.
(Definition of not know what hit you from the Cambridge Academic Content Dictionary © Cambridge University Press)
Translations of “not know what hit you”
in Chinese (Simplified) 过度惊吓而无法反应, 惊呆了…
in Chinese (Traditional) 過度驚嚇而無法反應, 嚇呆了…