- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
497 entries under adjective topic. ×
| unflagging | |
| unmerciful(mean, hard, tough, harsh) | |
| unsentimental(hardened, uncompromising, toughened, cynical) | |
| acrimonious(tough, severe, harsh, cruel) | |
| apathetic(person, mean, hard, cool) | |
| case-hardened(hard, careless, indifferent, cruel) | |
| dead set(determined, resolute, uncompromising, unshakeable) | |
| dense(strong, hard, tough, sturdy) | |
| flintlike | |
| hanging(determined, resolute, obstinate, uncompromising) | |
| indefatigable | |
| indifferent(mean, hard, cool, unpleasant) | |
| indomitable(strong, hard, tough, difficult) | |
| inured(hard, careless, indifferent, cruel) | |
| iron-willed(determined, resolute, uncompromising, unshakeable) | |
| puritanical | |
| rebellious(tough, firm, unreasonable, grim) | |
| rock-ribbed(determined, resolute, uncompromising, unshakeable) | |
| savage(mean, hard, rough, harsh) | |
| solid |
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| APA | Smart Define. (2016). obdurate thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/obdurate/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "obdurate thesaurus" https://smartdefine.org/obdurate/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, obdurate thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/obdurate/thesaurus/synonyms>. |
| MLA | Smart Define. "obdurate thesaurus" 23 March 2016. Web. 26 September 2026. <https://smartdefine.org/obdurate/thesaurus/synonyms> |