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Definition of “overturn” - English Dictionary

"overturn" in American English

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overturnverb [I/T]

us   /ˌoʊ·vərˈtɜrn/
to turn over, or to cause something to turn over: [I] The truck overturned, spilling its cargo.
To overturn a decision or judgment is for a court to change it so it will not be in effect: [T] The court of appeals overturned her conviction and ordered a new trial.
(Definition of overturn from the Cambridge Academic Content Dictionary © Cambridge University Press)

"overturn" in British English

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uk   /ˌəʊ.vəˈtɜːn/ us   /ˌoʊ.vɚˈtɝːn/
  • overturn verb (GO UPSIDE DOWN)

[I or T] to (cause to) turn over: The car skidded off the road, hit a tree and overturned. The intruder had overturned some of the furniture in the house.

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(Definition of overturn from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

"overturn" in Business English

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overturnverb [T]

uk   /ˌəʊvəˈtɜːn/ us  
LAW to change a legal decision: overturn a decision/verdict/ruling The Court of Appeal overturned the earlier decision.
(Definition of overturn from the Cambridge Business English Dictionary © Cambridge University Press)
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