INVALIDATE

• (verb) take away the legal force of or render ineffective

  "invalidate a contract"

  synonyms : vitiate , void

• (verb) show to be invalid

  synonyms : nullify

  Her hard work on the rose plants was nullified when the rose competition was canceled. -added by naila_inlas

• (verb) make invalid for use

  "cancel cheques or tickets"

  synonyms : cancel

• (verb) declare invalid

  "The contract was annulled", "void a plea"

  synonyms : annul , avoid , nullify , quash , void

WordNet® 3.0, © 2006 by Princeton University.

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