contradict (v.)

• abjure
• abrogate
• annul
• answer
• antagonize
• belie
• break
• challenge
• chuck
• clash
• collide
• conflict
• confound
• confute
• contemn
• contest
• contravene
• controvert
• counter
• counteract
• counterattack
• counterbalance
• countercheck
• counterpoise
• counterpose
• countervail
• cross
• crush
• decline
• defeat
• demolish
• deny
• despise
• differ
• disaccord
• disagree
• disallow
• disapprove
• disavow
• discard
• disclaim
• discount
• disdain
• dismiss
• disown
• disprove
• dispute
• disregard
• dissent
• except
• exclude
• falsify
• finish
• floor
• forbid
• forswear
• gainsay
• garble
• ignore
• impugn
• jangle
• jar
• jostle
• mismatch
• mismate
• negate
• negative
• nonplus
• nullify
• object
• offset
• oppose
• oppugn
• overthrow
• overturn
• overwhelm
• parry
• rebuff
• rebut
• recant
• refuse
• refute
• reject
• renounce
• repel
• repudiate
• repulse
• resist
• retract
• reverse
• revoke
• scout
• settle
• silence
• spurn
• squash
• squelch
• subvert
• traverse
• undermine
• upset
• vary
• waive