Answer: refute

AnswerCrossword Clue
REFUTEProve false
REFUTEContradict
REFUTEProve to be false
REFUTEDisprove
REFUTEProve wrong
REFUTEShow to be false
REFUTEDisprove.
REFUTEShow to be invalid.
REFUTEProve false.
REFUTEShow to be false.
REFUTECounter convincingly
refuteto prove wrong
refuteto prove to be false or erroneous, also REBUT