Answer: negate

AnswerCrossword Clue
NEGATEAnnul
NEGATEDisprove
NEGATEOverturn
NEGATEDeny.
NEGATENullify.
NEGATECancel out.
NEGATEProve nonexistent.
NEGATEVeto.
NEGATEDeny: nullify.
NEGATEMake void
NEGATECause to be invalid
NEGATEDeny or annul
NEGATEMake ineffective
NEGATENEON PORTAL
NEGATERebut
NEGATEProve wrong
NEGATEMake nothing of
NEGATENix
NEGATEOffset
NEGATERescind
NEGATEContravene
NEGATERender invalid
negateto nullify (to negate)
negateto deny; nullify
NEGATEVeto
NEGATENullify
NEGATECounteract
NEGATECancel out
NEGATECountermand
NEGATEDeny the truth of
NEGATERule out
NEGATEProve false
NEGATERefute
NEGATERender ineffective
NEGATEDeny
NEGATEContradict
NEGATEMake invalid
NEGATESay it isn't so
NEGATEScotch
NEGATECancel