obdurate
adjective
[ ˈɒbdjʊrət ]
• stubbornly refusing to change one's opinion or course of action.
• "I argued this point with him, but he was obdurate"
Similar:
stubborn,
obstinate,
unyielding,
unbending,
inflexible,
intransigent,
implacable,
pig-headed,
bull-headed,
mulish,
stiff-necked,
headstrong,
wilful,
unshakeable,
unmalleable,
intractable,
unpersuadable,
unrelenting,
relentless,
immovable,
inexorable,
uncompromising,
hard,
stony,
iron,
iron-willed,
adamant,
firm,
fixed,
determined,
bloody-minded,
indurate,
Origin:
late Middle English (originally in the sense ‘hardened in sin, impenitent’): from Latin obduratus, past participle of obdurare, from ob- ‘in opposition’ + durare ‘harden’ (from durus ‘hard’).
