· 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"
Synonym(s): repress, keep_down, subdue, subjugate, reduce
Hypernym(s): oppress, suppress, crush
· declare invalid; "The contract was annulled"; "void a plea"
Synonym(s): invalidate, annul, void, avoid, nullify
Hypernym(s): cancel, strike_down