transitive verb. To make invalid; nullify.

To render invalid; destroy the strength or validity of; render of no force or effect.

Specifically In law, to deprive of binding force or legal efficacy: as, fraud invalidates a contract.

transitive verb. To render invalid; to weaken or lessen the force of; to destroy the authority of; to render of no force or effect; to overthrow.

verb. To make invalid. Esp. applied to contract law.

verb. show to be invalid

verb. take away the legal force of or render ineffective

verb. declare invalid

verb. make invalid for use

"FARRELL: I'm afraid I have to say that I think if the west started getting into the game of asking Muslim clerics to issue fatwas then it would put the clerics in a very difficult situation and it would kind of invalidate the fatwa if they did it because they would look like they're doing it at the behest of the west."

confirm  

invalidated  invalidating  

alter  change  contradict  mark  modify  

abate  abolish  abolish  abrogate  abrogate  

invalidated  invalidates  invalidating