negate

Verb
  1. Be in contradiction with (synset 202669219)
    is a type of: depart, deviate, diverge, vary - be at variance with; be out of line with
    same as: belie, contradict
  2. Deny the truth of (synset 200825097)
    is a type of: differ, disagree, dissent, take issue - be of different opinions
    subtypes: deny - declare untrue; contradict
    same as: contradict, contravene
  3. Prove negative;
    Show to be false (synset 200668804)
    referred to in: logic, logical system, system of logic - a system of reasoning
    is a type of: demonstrate, establish, prove, shew, show - establish the validity of something, as by an example, explanation or experiment
    subtypes:
    same as: contradict
  4. Make ineffective by counterbalancing the effect of (synset 200471015)
    "Her optimism neutralizes his gloom"; "This action will negate the effect of my efforts"
    is a type of: weaken - lessen the strength of
    same as: neutralise, neutralize, nullify

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