- Definitions|1
- Thesaurus|618
- Abbreviations|0
46 entries under active topic. ×
| indefatigable(adjective, strong, tough, continue, fit) | |
| tireless(adjective, strong, continue, firm, difficult) | |
| untiring(adjective, strong, continue, firm, solid) | |
| energetic(adjective, determined, vigorous, full) | |
| industrious(adjective, strong, difficult, energetic, lively) | |
| dynamic(adjective, strong, moving, lively) | |
| strong(adjective, sound, tough, fit, firm) | |
| vigorous(adjective, strong, sound, tough, fit) | |
| stalwart(adjective, strong, sound, tough, fit) | |
| kinetic(adjective, strong, moving, energetic, lively) | |
| lively(adjective, strong, moving, vigorous) | |
| plugging(adjective, strong, firm, determined) | |
| rugged(adjective, strong, sound, tough, fit) | |
| spirited(adjective, strong, moving, lively) | |
| strenuous(adjective, strong, difficult, energetic, lively) | |
| tough(adjective, strong, sound, fit, firm) | |
| vital(adjective, strong, tough, fit, lively) | |
| aggressive(adjective, strong, moving, lively) | |
| animated(adjective, strong, moving, lively) | |
| ball of fire(expression, adjective, idiom, strong, lively) |
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| APA | Smart Define. (2015). unflagging thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unflagging/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unflagging thesaurus" https://smartdefine.org/unflagging/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, unflagging thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unflagging/thesaurus/synonyms>. |
| MLA | Smart Define. "unflagging thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unflagging/thesaurus/synonyms> |