- Definitions|2
- Thesaurus|493
- Abbreviations|0
45 entries under untiring topic. ×
| staunch(adjective, strong, tough, fit, firm) | |
| steady(adjective, strong, firm, determined, resolute) | |
| vigorous(adjective, strong, sound, tough, fit) | |
| unswerving(adjective, set, strong, firm, determined) | |
| constant(adjective, strong, firm, determined, steady) | |
| pertinacious(adjective, strong, firm, determined, steady) | |
| firm(adjective, strong, tough, fit, solid) | |
| patient(noun, adjective, strong, firm, determined) | |
| relentless(adjective, resolute) | |
| unflinching(adjective, set, strong, firm, determined) | |
| unremitting(adjective, strong, firm, determined, steady) | |
| painstaking(adjective, activity) | |
| strenuous(adjective, strong, moving, difficult, energetic) | |
| active(adjective, strong, moving, difficult, energetic) | |
| dynamic(adjective, strong, moving, lively, active) | |
| unceasing(adjective, strong, firm, determined, steady) | |
| incessant(adjective, strong, firm, determined, steady) | |
| ball of fire(expression, adjective, idiom, strong, lively) | |
| bound and determined | |
| dead set on |
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| APA | Smart Define. (2015). indefatigable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/indefatigable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indefatigable thesaurus" https://smartdefine.org/indefatigable/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, indefatigable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/indefatigable/thesaurus/synonyms>. |
| MLA | Smart Define. "indefatigable thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/indefatigable/thesaurus/synonyms> |