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verb (used with object), nul·li·fied, nul·li·fy·ing.
  1. to render or declare legally void or inoperative: to nullify a contract.
  2. to deprive (something) of value or effectiveness; make futile or of no consequence.

Origin of nullify

First recorded in 1585–95, nullify is from the Late Latin word nūllificāre to despise. See nulli-, -fy
Related formsnul·li·fi·er, nounre·nul·li·fy, verb (used with object), re·nul·li·fied, re·nul·li·fy·ing.un·nul·li·fied, adjective

Synonyms for nullify

See more synonyms for on Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for nullified


verb -fies, -fying or -fied (tr)
  1. to render legally void or of no effect
  2. to render ineffective or useless; cancel out
Derived Formsnullification, nounnullifier, noun

Word Origin for nullify

C16: from Late Latin nullificāre to despise, from Latin nullus of no account + facere to make
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 nullified



1590s, from Late Latin nullificare "to esteem lightly, despise," literally "to make nothing," from Latin nullus "not any" (see null) + root of facere "to make" (see factitious). Related: Nullified; nullifying.

Online Etymology Dictionary, © 2010 Douglas Harper