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[kuh n-vik-shuh n] /kənˈvɪk ʃən/
a fixed or firm belief:
No clever argument, no persuasive fact or theory could make a dent in his conviction in the rightness of his position.
the act of convicting someone, as in a court of law; a declaration that a person is guilty of an offense.
the state of being convicted.
the act of convincing a person by argument or evidence.
the state of being convinced.
Origin of conviction
late Middle English
1400-50; late Middle English < Late Latin convictiōn- (stem of convictiō) proof (of guilt). See convict, -ion
Related forms
convictional, adjective
nonconviction, noun
preconviction, noun
proconviction, adjective
reconviction, noun
5. doubt, uncertainty.
Synonym Study
1. See belief. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for conviction
Contemporary Examples
Historical Examples
  • Percival watched the decline with a conviction that he was dreaming.

    The Spenders Harry Leon Wilson
  • Falling from the lips of others, they dropped with conviction into my own soul.

  • She spoke quietly enough, but with the earnestness of conviction.

    Ester Ried Yet Speaking Isabella Alden
  • This accusation, after soul-wearying delays, had culminated to-day in conviction.

    Within the Law Marvin Dana
  • Mary's voice came with a certainty of conviction born of fact.

    Within the Law Marvin Dana
British Dictionary definitions for conviction


the state or appearance of being convinced
a fixed or firmly held belief, opinion, etc
the act of convincing
the act or an instance of convicting or the state of being convicted
carry conviction, to be convincing
Derived Forms
convictional, adjective
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 conviction

mid-15c., "the proving of guilt," from Late Latin convictionem (nominative convictio) "proof, refutation," noun of action from past participle stem of convincere (see convince). Meaning "mental state of being convinced" is from 1690s; that of "firm belief, a belief held as proven" is from 1841.

Online Etymology Dictionary, © 2010 Douglas Harper
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Idioms and Phrases with conviction
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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