- Definitions|1
- Thesaurus|618
- Abbreviations|0
45 entries under vigorous topic. ×
| indefatigable(adjective, strong, tough, continue, fit) | |
| tireless(adjective, strong, continue, firm, difficult) | |
| untiring(adjective, strong, continue, firm, solid) | |
| unfaltering(adjective, strong, firm, solid, energetic) | |
| unwearied(adjective, strong, continue, firm, energetic) | |
| energetic(adjective, determined, active, full) | |
| inexhaustible(adjective, strong, continue, firm, energetic) | |
| unremitting(adjective, strong, firm, energetic, determined) | |
| industrious(adjective, strong, difficult, energetic, lively) | |
| unflinching(adjective, set, strong, firm, energetic) | |
| dynamic(adjective, strong, moving, lively, active) | |
| pertinacious(adjective, strong, firm, energetic, determined) | |
| patient(adjective, strong, firm, energetic, determined) | |
| strong(adjective, sound, tough, fit, firm) | |
| active(adjective, strong, difficult, energetic, lively) | |
| stalwart(adjective, strong, sound, tough, fit) | |
| kinetic(adjective, strong, moving, energetic, lively) | |
| lively(adjective, strong, moving, active) | |
| rugged(adjective, strong, sound, tough, fit) | |
| spirited(adjective, strong, moving, lively, active) |
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| Harvard | Smart Define 2015, unflagging thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/unflagging/thesaurus/synonyms>. |
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