9 Grammatical Pitfalls


[ob-doo-rit, -dyoo-] /ˈɒb dʊ rɪt, -dyʊ-/
unmoved by persuasion, pity, or tender feelings; stubborn; unyielding.
stubbornly resistant to moral influence; persistently impenitent:
an obdurate sinner.
Origin of obdurate
late Middle English
1400-50; late Middle English obdurat < Latin obdūrātus (past participle of obdūrāre to harden), equivalent to ob- ob- + dūr(us) hard + -ātus -ate1
Related forms
obdurately, adverb
obdurateness, noun
unobdurate, adjective
unobdurately, adverb
unobdurateness, noun
1. hard, obstinate, callous, unbending, inflexible. 2. unregenerate, reprobate, shameless.
1. soft, tractable. 2. humble, repentant. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for obdurate
  • By moving exhortations to virtue, she softened and converted several obdurate sinners.
  • Nearly everything on view possesses similarly obdurate dignity.
  • It creates out of paper a heavy, obdurate permanency.
  • The opposition to this change was obdurate and continuous.
  • However, the building proved an obdurate foe to the wreckers.
  • The police were obdurate, however, and the fight did not take place.
  • She was obdurate, and by obduracy added one hour and a half to her single blessedness.
British Dictionary definitions for obdurate


not easily moved by feelings or supplication; hardhearted
impervious to persuasion, esp to moral persuasion
Derived Forms
obduracy, obdurateness, noun
obdurately, 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
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Word Origin and History for obdurate

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.

Online Etymology Dictionary, © 2010 Douglas Harper
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