before you know it Meaning in the Cambridge English Dictionary
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Meaning of “before you know it” in the English Dictionary

"before you know it" in British English

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before you know it

C1 very ​soon: We'll be on ​our way out again before you know it.
(Definition of before you know it from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"before you know it" in American English

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before you know it

very ​soon: A ​weekseems like a ​longtime, but ​Saturday will be here before you ​know it.
(Definition of before you know it from the Cambridge Academic Content Dictionary © Cambridge University Press)
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