· be in contradiction with
Hypernym(s): deviate, vary, diverge, depart
· deny the truth of
Synonym(s): negate, contravene
Hypernym(s): disagree, differ, dissent, take_issue
· be resistant to; "The board opposed his motion"
Synonym(s): oppose, controvert
· prove negative; show to be false
Synonym(s): negate
Hypernym(s): prove, demonstrate, establish, show, shew