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negate

[ni-geyt, neg-eyt]
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verb (used with object), ne·gat·ed, ne·gat·ing.
  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.
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verb (used without object), ne·gat·ed, ne·gat·ing.
  1. to be negative; bring or cause negative results: a pessimism that always negates.
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Origin of negate

1615–25; < Latin negātus (past participle of negāre to deny, refuse), equivalent to neg- (variant of nec not; see neglect) + -ā- theme vowel + -tus past participle suffix
Related formsne·ga·tor, ne·gat·er, nounre·ne·gate, verb (used with object), re·ne·gat·ed, re·ne·gat·ing.self-ne·gat·ing, adjectiveun·ne·gat·ed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for negator

remedy, cure, corrective, countermeasure, medicine, antitoxin, preventive, antivenin, counteractant, counteragent, negator, neutralizer

British Dictionary definitions for negator

negator

noun
  1. electronics another name for NOT circuit
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negate

verb (tr)
  1. to make ineffective or void; nullify; invalidate
  2. to deny or contradict
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Derived Formsnegator or negater, noun

Word Origin for negate

C17: from Latin negāre, from neg-, variant of nec not + aio I say
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for negator

negate

v.

1795 (with an isolated use from 1620s), back-formation from negation, or else from Latin negatus, past participle of negare. Related: Negated; negates; negating.

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Online Etymology Dictionary, © 2010 Douglas Harper