- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
105 entries under strong topic. ×
| set(adjective, determined, resolute, obstinate) | |
| mulish(adjective, hard, tough, firm) | |
| tough(adjective, mean, hard, cool) | |
| tenacious(adjective, determined, resolute, obstinate) | |
| grim(adjective, mean, hard, tough) | |
| implacable(adjective, mean, hard, tough) | |
| severe(adjective, mean, hard, tough) | |
| unwavering(adjective, secure, flat, certain) | |
| stiff-necked(adjective, hard, tough, severe) | |
| hard-boiled(adjective, person, hard, tough) | |
| harsh(adjective, mean, hard, cool) | |
| iron(adjective, hard, tough, firm) | |
| steely(adjective, hard, tough, cold) | |
| flinty(adjective, close, hard, tough) | |
| persistent(adjective, tough, flat, firm) | |
| rigorous(adjective, hard, tough, severe) | |
| austere(adjective, mean, hard, tough) | |
| hardheaded(adjective, hard, tough, determined) | |
| resolved(adjective, determined, definite, resolute) | |
| strict(adjective, hard, tough, severe) |
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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> |