verb (used with object), ne·gat·ed, ne·gat·ing.
to deny the existence, evidence, or truth of: an investigation tending to negate any supernatural influences.
to nullify or cause to be ineffective: Progress on the study has been negated by the lack of funds.
verb (used without object), ne·gat·ed, ne·gat·ing.
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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
to make ineffective or void; nullify; invalidate
to deny or contradict
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
1795 (with an isolated use from 1620s), back-formation from negation, or else from Latin negatus, past participle of negare. Related: Negated; negates; negating.
Online Etymology Dictionary, © 2010 Douglas Harper