- Definitions|2
- Thesaurus|493
- Abbreviations|0
255 entries under adjective topic. ×
| abiding | |
| continuing(strong, firm, determined, steady) | |
| continuous | |
| courageous(resolute, tenacious) | |
| dauntless(resolute, tenacious) | |
| hard | |
| hard-working | |
| intent(activity, resolute) | |
| lasting(continuous, persevering) | |
| persisting | |
| single-minded | |
| spirited(strong, moving, lively, active) | |
| true(resolute, tenacious) | |
| unchangeable(resolute, continuous, perseverance) | |
| unrelenting | |
| bulldogged | |
| bullheaded(resolute, tenacious) | |
| conscientious | |
| eager | |
| enterprising(strong, moving, lively, active) |
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| APA | Smart Define. (2015). indefatigable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/indefatigable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indefatigable thesaurus" https://smartdefine.org/indefatigable/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, indefatigable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/indefatigable/thesaurus/synonyms>. |
| MLA | Smart Define. "indefatigable thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/indefatigable/thesaurus/synonyms> |