- Definitions|2
- Thesaurus|860
- Abbreviations|0
46 entries under vigorous topic. ×
| indefatigable(adjective, strong, continue, firm, difficult) | |
| unflagging(adjective, strong, continue, firm, difficult) | |
| untiring(adjective, strong, continue, energetic, lively) | |
| industrious(adjective, work, strong, strain, difficult) | |
| dogged(adjective, strong, firm, energetic, determined) | |
| energetic(adjective, determined, active, full) | |
| active(adjective, strong, difficult, energetic, lively) | |
| unfaltering(adjective, strong, firm, energetic, determined) | |
| inexhaustible(adjective, strong, continue, firm, energetic) | |
| unwearied(adjective, strong, continue, firm, energetic) | |
| dynamic(adjective, strong, moving, energetic, lively) | |
| spirited(adjective, strong, moving, energetic, lively) | |
| strenuous(adjective, strong, difficult, energetic, lively) | |
| lively(adjective, strong, moving, energetic, active) | |
| pertinacious(adjective, strong, firm, energetic, determined) | |
| unflinching(adjective, set, strong, firm, energetic) | |
| enterprising(adjective, strong, moving, energetic, lively) | |
| stalwart(adjective, strong, moving, energetic, lively) | |
| strong(adjective, moving, firm, energetic, lively) | |
| vital(adjective, strong, moving, energetic, lively) |
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| APA | Smart Define. (2016). tireless thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/tireless/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "tireless thesaurus" https://smartdefine.org/tireless/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, tireless thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/tireless/thesaurus/synonyms>. |
| MLA | Smart Define. "tireless thesaurus" 19 February 2016. Web. 26 September 2026. <https://smartdefine.org/tireless/thesaurus/synonyms> |