| Word | Definitions | Synonyms |
|---|---|---|
| obduracy | (noun) resoluteness by virtue of being unyielding and inflexible | Synonyms: adamance, unyieldingness |
| obdurate | (adjective) showing unfeeling resistance to tender feelings | Synonyms: flint, flinty, granitic, stony |
| (adjective) stubbornly persistent in wrongdoing | Synonyms: cussed, obstinate, unrepentant | |
| obdurately | (adverb) in a stubborn unregenerate manner | Synonyms: cussedly, mulishly, obstinately, pig-headedly, stubbornly |