invalidate   (Sound)

The verb invalidate has 4 senses

• invalidate, annul, quash, void, avoid, nullify -- (declare invalid; "The contract was annulled"; "void a plea")


• cancel, invalidate -- (make invalid for use; "cancel cheques or tickets")


• invalidate, nullify -- (show to be invalid)


• invalidate, void, vitiate -- (take away the legal force of or render ineffective; "invalidate a contract")