1 a: stubbornly persistent in wrongdoing. b: hardened in feelings.
2: resistant to persuasion or softening influences. Syn., see Inflexible.
– obdurately, adverb.
– obdurateness, noun.
[Origin: Middle English, from Latin obduratus, past participle of obdurare to harden, from ob– against + durus hard.]
Obduracy, noun, plural -cies: the quality or state of being obdurate. (1597)
“I’m Milan, the man said, not offering his hand nor any shred of comfort in his voice, which was strangely accented, a dry obduracy to it as if each word were something to be wrestled then spat out. ” – Eleven Days, Stav Sherez.