Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb quash

2 senses of quash

Sense 1
repress, quash, keep down, subdue, subjugate, reduce -- (put down by force or intimidation; "The government quashes any attempt of an uprising"; "China keeps down her dissidents very efficiently"; "The rich landowners subjugated the peasants working the land")
       => oppress, suppress, crush -- (come down on or keep down by unjust use of one's authority; "The government oppresses political activists")

Sense 2
invalidate, annul, quash, void, avoid, nullify -- (declare invalid; "The contract was annulled"; "void a plea")
       => cancel, strike down -- (declare null and void; make ineffective; "Cancel the election results"; "strike down a law")

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