Meaning of “quash” in the English Dictionary

"quash" in American English

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quashverb [ T ]

us /kwɑʃ/

to stop or block something from happening:

The Secretary of Defense tried to quash speculation that he was planning to resign following the disastrous military defeat.

(Definition of “quash” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"quash" in Business English

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quashverb [ T ]

uk /kwɒʃ/ us

LAW to state officially that something, especially an earlier official decision, is no longer to be accepted:

quash a conviction/decision/order His conviction was quashed in March after a lengthy legal battle.

to forcefully stop something that you do not want to happen:

The company moved quickly to quash rumours of trading losses.
The engineering group yesterday quashed speculation that it was a takeover target.

(Definition of “quash” from the Cambridge Business English Dictionary © Cambridge University Press)