- Definitions|2
- Thesaurus|860
- Abbreviations|0
61 entries under active topic. ×
| indefatigable(adjective, strong, continue, firm, difficult) | |
| unflagging(adjective, strong, continue, firm, difficult) | |
| untiring(adjective, strong, continue, energetic, lively) | |
| persistent(adjective, strong, firm, energetic, determined) | |
| resolute(adjective, set, strong, firm, energetic) | |
| determined(adjective, strong, keen, firm, energetic) | |
| industrious(adjective, work, strong, strain, difficult) | |
| dogged(adjective, strong, firm, energetic, determined) | |
| energetic(adjective, determined, vigorous, full) | |
| sedulous(adjective, work, strain, firmness) | |
| active(adjective, strong, difficult, energetic, lively) | |
| assiduous(adjective, work, strain, firmness) | |
| unfailing(adjective, set, strong, continue, firm) | |
| inexhaustible(adjective, strong, continue, firm, energetic) | |
| vigorous(adjective, strong, energetic, lively, determined) | |
| busy | |
| dynamic(adjective, strong, moving, energetic, lively) | |
| enthusiastic(adjective, determined, peppy, bouncing) | |
| spirited(adjective, strong, moving, energetic, lively) | |
| strenuous(adjective, strong, difficult, energetic, lively) |
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| APA | Smart Define. (2016). tireless thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/tireless/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tireless thesaurus" https://smartdefine.org/tireless/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, tireless thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/tireless/thesaurus/synonyms>. |
| MLA | Smart Define. "tireless thesaurus" 19 February 2016. Web. 22 September 2026. <https://smartdefine.org/tireless/thesaurus/synonyms> |