Invalidating Synonyms and Antonyms

Declare invalid
(Verb)
Synonyms:
  1. nullifying
  2. avoiding
  3. voiding
  4. quashing
  5. annulling
Antonyms:
  1. validating
Make invalid for use
(Verb)
Synonyms:
  1. voiding
  2. vitiating
  3. cancelling
  4. nullifying
  5. revoking
  6. annulling
  7. negating
  8. extinguishing
  9. undoing
  10. undermining
  11. quashing
  12. refuting
  13. offsetting
  14. abolishing
  15. neutralizing
  16. annihilating
Antonyms:
  1. permitting
  2. approving
  3. validating
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Establishing as invalid or untrue
(Adjective)
Synonyms:
  1. disconfirming