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Meaning of negate

ne•gate

Pronunciation: (ni-gāt', neg'āt), [key]
— v., -gat•ed, -gat•ing.
—v.t.
  1. to deny the existence, evidence, or truth of: an investigation tending to negate any supernatural influences.
  2. to nullify or cause to be ineffective: Progress on the study has been negated by the lack of funds.
—v.i.
  1. to be negative; bring or cause negative results: a pessimism that always negates.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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