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obdurate

[ob-doo-rit, -dyoo-]
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adjective
  1. unmoved by persuasion, pity, or tender feelings; stubborn; unyielding.
  2. stubbornly resistant to moral influence; persistently impenitent: an obdurate sinner.
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Origin of obdurate

1400–50; late Middle English obdurat < Latin obdūrātus (past participle of obdūrāre to harden), equivalent to ob- ob- + dūr(us) hard + -ātus -ate1
Related formsob·du·rate·ly, adverbob·du·rate·ness, nounun·ob·du·rate, adjectiveun·ob·du·rate·ly, adverbun·ob·du·rate·ness, noun

Synonyms

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1. hard, obstinate, callous, unbending, inflexible. 2. unregenerate, reprobate, shameless.

Antonyms

1. soft, tractable. 2. humble, repentant.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for obdurate

obdurate

adjective
  1. not easily moved by feelings or supplication; hardhearted
  2. impervious to persuasion, esp to moral persuasion
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Derived Formsobduracy or obdurateness, nounobdurately, adverb

Word Origin

C15: from Latin obdūrāre to make hard, from ob- (intensive) + dūrus hard; compare endure
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 obdurate

adj.

mid-15c., "stubborn; hardened," from Latin obduratus "hardened," past participle of obdurare "be hard, hold out, persist, endure," from ob "against" (see ob-) + durare "harden, render hard," from durus "hard" (see endure). Related: Obdurately.

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Online Etymology Dictionary, © 2010 Douglas Harper