- Definitions|2
- Thesaurus|493
- Abbreviations|0
48 entries under active topic. ×
| tireless(adjective, strong, continue, firm, difficult) | |
| unflagging(adjective, strong, tough, continue, fit) | |
| untiring(adjective, strong, continue, lively, determined) | |
| energetic(adjective, determined, full, forceful) | |
| unfailing(adjective, set, strong, continue, firm) | |
| inexhaustible(adjective, strong, continue, firm, energetic) | |
| industrious(adjective, activity, strong, difficult, energetic) | |
| vigorous(adjective, strong, sound, tough, fit) | |
| strenuous(adjective, strong, moving, difficult, energetic) | |
| stalwart(adjective, strong, sound, tough, fit) | |
| dynamic(adjective, strong, moving, lively) | |
| strong(adjective, sound, tough, fit, firm) | |
| spirited(adjective, strong, moving, lively) | |
| enterprising(adjective, strong, moving, lively) | |
| enthusiastic(adjective, determined, resolute, peppy) | |
| lively(adjective, strong, moving, vigorous) | |
| tough(adjective, strong, sound, fit, firm) | |
| vital(adjective, strong, tough, fit, lively) | |
| aggressive(adjective, strong, moving, lively) | |
| animated(adjective, strong, moving, lively) |
For more, visit
Indefatigable on
Power Thesaurus
| APA | Smart Define. (2015). indefatigable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/indefatigable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indefatigable thesaurus" https://smartdefine.org/indefatigable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, indefatigable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/indefatigable/thesaurus/synonyms>. |
| MLA | Smart Define. "indefatigable thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/indefatigable/thesaurus/synonyms> |