turn sth upside down Meaning in the Cambridge English Dictionary
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Meaning of “turn sth upside down” in the English Dictionary

"turn sth upside down" in British English

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turn sth upside down

to ​searcheverywhere for something, sometimes ​leaving a ​place very ​untidy: I ​turned the ​apartmentupside down but I couldn't ​find the ​letter.

turn (sth) upside down

to (​cause something to) ​changecompletely and in a ​bad way: Another ​poorharvest could ​turn the country's ​economyupside down. Their ​lives were ​turnedupside down when ​theirson was ​arrested.
(Definition of turn sth upside down from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)
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