125 entries under obstinate topic. ×
| adamant(adjective, mean, strong, hard, rough) | |
| obdurate(adjective, mean, strong, hard, cool) | |
| resolute(adjective, calm, clear, strong, hard) | |
| solid(adjective, calm, person, body, strong) | |
| unbending(adjective, mean, clear, strong, hard) | |
| stalwart(adjective, calm, person, body, strong) | |
| tenacious(adjective, strong, firm, determined, resolute) | |
| exacting(adjective, dull, hard, easy, severe) | |
| hard-boiled(noun, adjective, mean, strong, hard) | |
| ruthless(adjective, strong, hard, severe, rough) | |
| strict(adjective, strong, hard, easy, severe) | |
| determined(adjective, clear, strong, hard, severe) | |
| savage(adjective, hard, rough, harsh, violent) | |
| steadfast(adjective, calm, clear, strong, severe) | |
| violent(adjective, clear, hard, severe, rough) | |
| fixed(adjective, mean, strong, hard, sound) | |
| merciless(adjective, hard, severe, rough, harsh) | |
| relentless(adjective, mean, strong, hard, severe) | |
| staunch(adjective, calm, clear, strong, sound) | |
| terrible(adjective, rough, property) |
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| APA | Smart Define. (2016). tough thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/tough/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tough thesaurus" https://smartdefine.org/tough/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, tough thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/tough/thesaurus/synonyms>. |
| MLA | Smart Define. "tough thesaurus" 30 March 2016. Web. 29 September 2026. <https://smartdefine.org/tough/thesaurus/synonyms> |