338 entries under strong topic. ×
| physical(adjective, hard, solid, material) | |
| plucky(adjective, bold, resolute, spirited) | |
| potent(adjective, clear, sound, tough) | |
| rocklike(adjective, hard, substantial, stiff) | |
| secured(adjective, secure, stable, unmoving) | |
| serious(adjective, hard, tough, severe) | |
| spunky(adjective, determined, bold, resolute) | |
| stiff-necked(adjective, mean, hard, tough) | |
| true-blue(adjective, good, close, correct) | |
| unequivocal(adjective, good, clear, certain) | |
| able-bodied(adjective, sound, tough, fit) | |
| authoritarian(adjective, hard, tough, severe) | |
| brawny(adjective, fit, determined, healthy) | |
| bullheaded(adjective, hard, tough, determined) | |
| conclusive(adjective, clear, certain, definite) | |
| deep-rooted(adjective, calm, steady, even) | |
| doughty(bold, courage, spirited, brave) | |
| everlasting(adjective, tough, persistent, continuous) | |
| gutsy(adjective, determined, bold, resolute) | |
| hard-line(adjective, hard, tough, severe) |
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| APA | Smart Define. (2016). firm thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/firm/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, firm thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>. |
| MLA | Smart Define. "firm thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms> |