invalidate
Make legally worthless
To invalidate is to render something null, void, or ineffective.
A court may invalidate a contract found to violate law.
New evidence can invalidate a scientific theory.
Failing to follow proper procedures might invalidate an election.
The word also applies to dismissing someone's feelings or experiences: Don't invalidate her concerns just because you disagree.
Declare legally void
- voidWithout legal effect
- nullifyMake of no effect
- rescindFormally cancel or withdraw
- abrogateFormally abolish or annul
repeal · revoke · quash · vacate · overturn · countermand · vitiate · negate
Declare unfit to compete
- excludeBar from participation
- barDrinking establishment
- rejectDismiss as unsuitable
- precludeMake impossible in advance
prohibit · ban · disallow · strike · eliminate · throw-out · scratch · forfeit
Expose as false
- disproveProve something untrue
- refuteProve something untrue
- undermineWeaken by stealth
- contradictDispute a statement
challenge · rebut · dispute · demolish · puncture · explode · falsify · negate
annul
Declare legally void
abrogate · repeal · revoke · quash · vacate · overturn · countermand · vitiate · negate · abolish
disqualify
Declare unfit to compete
preclude · prohibit · ban · disallow · strike · eliminate · throw-out · scratch · forfeit
debunk
Expose as false
contradict · challenge · rebut · dispute · demolish · puncture · explode · falsify · negate · question
weaken
Reduce in strength
- compromiseAgreement through mutual sacrifice
- subvertSecretly weaken authority
- erodeDiminish through persistent friction
sabotage · destabilize · impair · diminish · undercut · damage · destroy · defeat · negate · vitiate
deactivate
Turn off or neutralize
corrupt · timeout · lapse · terminate · reset · overwrite · clear · flush · purge · deprecate
- cancelcancel, annul, nullify, revoke, repeal
- reversalsreverse, undo, revert, overturn, flip
- undoundo, undo button, backtrack, revert, reverse
- cancellation wordscancellation, revoking, voiding, annulment, repeal
- counteractneutralize, offset, counterbalance, cancel out, negate
- deletiondelete, erase, erasure, cross out, strike out
invalidatevalidate
Confirm as true
ratify · authorize · legalize · legitimize · sanction
invalidatevalidate
Confirm as true
confirm · verify · substantiate · corroborate · prove