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nullify

English

  1. 🔊 show to be invalid
  2. 🔊 make ineffective by counterbalancing the effect of
    “Her optimism neutralizes his gloom”
  3. 🔊 declare invalid
    “The contract was annulled”

Similar words

neutralize neutralise negate invalidate invalidate annul quash void avoid abate abjure abolish abrogate absolve annihilate annul assert the contrary belie bring to naught bring to nothing buffer cancel cancel out come to nothing