from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Hardened in wrongdoing or wickedness; stubbornly impenitent: "obdurate conscience of the old sinner” ( Sir Walter Scott).
- adj. Hardened against feeling; hardhearted: an obdurate miser.
- adj. Not giving in to persuasion; intractable. See Synonyms at inflexible.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Stubbornly persistent, generally in wrongdoing; refusing to reform or repent.
- adj. Physically hardened, toughened.
from the GNU version of the Collaborative International Dictionary of English
- adj. Hardened in feelings, esp. against moral or mollifying influences; unyielding; hard-hearted; stubbornly wicked.
- adj. Hard; harsh; rugged; rough; intractable.
- transitive v. To harden.
from The Century Dictionary and Cyclopedia
- To harden; confirm in resistance; make obdurate.
- Hardened, especially against moral influences; wickedly resisting.
- Hard-hearted; inexorable; unyielding; stubborn.
- Inflexible; stiff; harsh.
- Synonyms Obdurate, Callous, Hardened. These words all retain the original meaning of physical hardening, although it is obsolescent with obdurate. In the moral signification, the figure is most felt in the use of callous, which indicates sensibilities to right and wrong deadened by hard treatment, like callous flesh. Hardened is less definite, it being not always clear whether the person is viewed as made hard by circumstances or as having hardened himself against better influences and proper claims. Obdurate is the strongest, and implies most of determination and active resistance. See obstinate.
- Unbending, unsusceptible, insensible.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. stubbornly persistent in wrongdoing
- adj. showing unfeeling resistance to tender feelings
Middle English obdurat, from Late Latin obdūrātus, past participle of obdūrāre, to harden, from Latin, to be hard, endure : ob-, intensive pref.; see ob- + dūrus, hard; see deru- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Mid 15th century, from Latin obduratus ("hardened"), form of obdūrō, from ob- ("against") + dūrō ("harden, render hard"), from durus ("hard"). Compare durable, endure. (Wiktionary)