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nullify

[nuhl-uh-fahy] /ˈnʌl əˌfaɪ/
verb (used with object), nullified, nullifying.
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
1585-1595
1585-95; < Late Latin nūllificāre to despise. See nulli-, -fy
Related forms
nullifier, noun
renullify, verb (used with object), renullified, renullifying.
unnullified, adjective
Synonyms
1, 2. invalidate, annul, void, cancel.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for nullify
  • Such actions, if carried out extensively, might well nullify the law.
  • Be prepared to nullify or overturn the results.
  • How do you nullify the few bad apples who consistently bring your average down.
  • The majority of these are passive and therefore nullify your point.
  • The voices of both generations of women are honest and forthright, and nullify many myths about the mother-daughter relationship.
  • This does not nullify the theory.
  • It'll come down to sheer aggression and luck, which will nullify skill.
  • Missing class does not nullify a due date.
  • Slight movements by a test subject can nullify the results.
  • Opponents around the country vowed that they would eventually nullify the law through ballots and constitutional amendments.
British Dictionary definitions for nullify

nullify

/ˈnʌlɪˌfaɪ/
verb (transitive) -fies, -fying, -fied
1.
to render legally void or of no effect
2.
to render ineffective or useless; cancel out
Derived Forms
nullification, noun
nullifier, noun
Word Origin
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
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Word Origin and History for nullify
v.

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
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