- Definitions|2
- Thesaurus|860
- Abbreviations|0
215 entries under adjective topic. ×
| indefatigable(strong, continue, firm, difficult) | |
| unflagging(strong, continue, firm, difficult) | |
| untiring(strong, continue, energetic, lively) | |
| persevering(strong, firm, difficult, energetic) | |
| persistent(strong, firm, energetic, determined) | |
| resolute(set, strong, firm, energetic) | |
| determined(strong, keen, firm, energetic) | |
| industrious(work, strong, strain, difficult) | |
| steadfast(determined, resolute, tenacious) | |
| diligent(work, strain, firmness, resolute) | |
| dogged(strong, firm, energetic, determined) | |
| energetic(determined, active, vigorous, full) | |
| sedulous(work, strain, active, firmness) | |
| active(strong, difficult, energetic, lively) | |
| assiduous(work, strain, active, firmness) | |
| unfailing(set, strong, continue, firm) | |
| unfaltering(strong, firm, energetic, determined) | |
| unwavering(set, strong, firm, determined) | |
| unwearying | |
| staunch(strong, firm, determined, steady) |
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| APA | Smart Define. (2016). tireless thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/tireless/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tireless thesaurus" https://smartdefine.org/tireless/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, tireless thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/tireless/thesaurus/synonyms>. |
| MLA | Smart Define. "tireless thesaurus" 19 February 2016. Web. 24 September 2026. <https://smartdefine.org/tireless/thesaurus/synonyms> |