- Definitions|1
- Thesaurus|618
- Abbreviations|0
174 entries under adjective topic. ×
| indefatigable(strong, tough, continue, fit) | |
| tireless(strong, continue, firm, difficult) | |
| untiring(strong, continue, firm, solid) | |
| persistent(strong, firm, certain, determined) | |
| unfaltering(strong, firm, solid, energetic) | |
| unwavering(set, strong, firm, solid) | |
| persevering(strong, firm, difficult, energetic) | |
| steadfast(perseverance, persevering, tenacious) | |
| unfailing(strong, continue, firm, certain) | |
| dogged(strong, firm, solid, energetic) | |
| resolute(strong, firm, solid, determined) | |
| determined(strong, firm, solid, steady) | |
| constant(strong, firm, certain, determined) | |
| staunch(strong, tough, fit, firm) | |
| steady(strong, complete, firm, total) | |
| stubborn | |
| tenacious(strong, tough, fit, firm) | |
| unrelenting(persistent, continuous, perseverance) | |
| unswerving(set, strong, complete, firm) | |
| unwearying |
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| APA | Smart Define. (2015). unflagging thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unflagging/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unflagging thesaurus" https://smartdefine.org/unflagging/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, unflagging thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unflagging/thesaurus/synonyms>. |
| MLA | Smart Define. "unflagging thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/unflagging/thesaurus/synonyms> |