- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
178 entries under tough topic. ×
| impenitent(adjective, hard, harsh, careless) | |
| insensitive(adjective, mean, hard, cool) | |
| persevering(adjective, strong, flat, firm) | |
| self-willed(adjective, firm, difficult, determined) | |
| thick-skinned(adjective, hard, severe, harsh) | |
| unemotional(adjective, mean, hard, cool) | |
| unswerving(adjective, strong, firm, determined) | |
| contumacious(adjective, firm, determined, unreasonable) | |
| cussed(adjective, firm, unreasonable, grim) | |
| staunch(adjective, strong, flat, firm) | |
| wayward(adjective, difficult, contrary, obstinate) | |
| willful(adjective, firm, determined, resolute) | |
| authoritarian(adjective, strong, hard, severe) | |
| exacting(adjective, hard, severe, rough) | |
| inhuman(adjective, mean, hard, severe) | |
| insensible(adjective, strong, hard, severe) | |
| recalcitrant(adjective, firm, difficult, violent) | |
| single-minded(adjective, firm, harsh, cruel) | |
| stringent(adjective, severe, harsh, cruel) | |
| unsparing(adjective, close, strong, hard) |
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| APA | Smart Define. (2016). obdurate thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/obdurate/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "obdurate thesaurus" https://smartdefine.org/obdurate/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, obdurate thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/obdurate/thesaurus/synonyms>. |
| MLA | Smart Define. "obdurate thesaurus" 23 March 2016. Web. 29 September 2026. <https://smartdefine.org/obdurate/thesaurus/synonyms> |