- Definitions|2
- Thesaurus|1.1k
- Abbreviations|0
| burning(adjective, bright, energetic, passionate, determined) | |
| earnest(adjective, vigorous) | |
| emphatic(adjective, vigorous) | |
| fervent(adjective, vigorous) | |
| foolhardy(adjective, courageous, fearless, plucky) | |
| forcible(adjective, strong, tough, energetic, powerful) | |
| formidable(adjective, strong) | |
| fortitudinous(adjective, fear, courageous, fearless, plucky) | |
| frisky(adjective, energetic, lively, vigorous, spirited) | |
| grainy | |
| granular | |
| granulose | |
| high-strung(adjective, energetic, lively, aggressive, fiery) | |
| highflying(adjective, sensibility) | |
| husky(adjective, strong) | |
| intense(adjective, strong, tough, energetic, powerful) | |
| muscular(adjective, strong) | |
| rash | |
| reckless | |
| sinewy(adjective, strong) |
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| APA | Smart Define. (2016). mettlesome thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/mettlesome/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "mettlesome thesaurus" https://smartdefine.org/mettlesome/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, mettlesome thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/mettlesome/thesaurus/synonyms>. |
| MLA | Smart Define. "mettlesome thesaurus" 2 March 2016. Web. 29 September 2026. <https://smartdefine.org/mettlesome/thesaurus/synonyms> |