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English definition of “quash”

quash

verb [T]     /kwɒʃ/
CHANGE DECISION formal to officially change a legal decision so that it stops existing: His conviction was quashed last month.Legislation and law-makingCourt cases, orders and decisions
STOP to stop something that you do not want to happen: He appeared on television to quash rumours that he was seriously ill.Forbidding and banning thingsCausing something to endComing to an endPreventing and impedingLimiting and restricting
(Definition of quash verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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