455 entries under adjective topic. ×
| persevering(quiet, understanding, strong, tough) | |
| determined(strong, tough, flat, firm) | |
| indefatigable(strong, firm, determined, steady) | |
| resolute(strong, tough, flat, firm) | |
| relentless(strong, tough, severe, continue) | |
| dogged(strong, tough, firm, energetic) | |
| continuous(continue, firm, certain, steady) | |
| pertinacious(strong, tough, continue, firm) | |
| unremitting(strong, continue, firm, determined) | |
| tireless(strong, firm, energetic, determined) | |
| obstinate(strong, tough, continue, firm) | |
| unflagging(strong, firm, certain, determined) | |
| insistent(continue, determined, resolute, demanding) | |
| unrelenting(tough, firm, certain, determined) | |
| unwavering(strong, flat, firm, intense) | |
| incessant(strong, continue, firm, determined) | |
| staunch(strong, tough, flat, firm) | |
| unfaltering(strong, firm, intense, deliberate) | |
| fixed(strong, tough, flat, firm) | |
| unceasing(strong, continue, firm, determined) |
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| APA | Smart Define. (2015). persistent thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/persistent/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "persistent thesaurus" https://smartdefine.org/persistent/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, persistent thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/persistent/thesaurus/synonyms>. |
| MLA | Smart Define. "persistent thesaurus" 1 June 2015. Web. 20 September 2026. <https://smartdefine.org/persistent/thesaurus/synonyms> |