222 entries under tough topic. ×
| thick-skinned(adjective, mean, hard, harsh) | |
| trim(strong, fit, fresh, well) | |
| uncompassionate(adjective, mean, hard, harsh) | |
| unfeeling(adjective, mean, hard, severe) | |
| unflexible(adjective, hard, solid, rigid) | |
| unimpaired(strong, complete, fit, solid) | |
| unimpressible(adjective, mean, hard, harsh) | |
| unpermissive(adjective, severe, harsh, solid) | |
| unsparing(adjective, strong, hard, severe) | |
| uptight(adjective, severe, harsh, fixed) | |
| violent(adjective, clear, hard, severe) | |
| well(adjective, strong, complete, fit) | |
| whole(strong, complete, fit, solid) | |
| willful(determined, fixed, resolute, inflexible) | |
| balky(unreasonable, inflexible, obstinate, stubborn) | |
| bitter(adjective, strong, hard, severe) | |
| blooming(strong, fit, fresh, well) | |
| boisterous(adjective, strong, fit, healthy) | |
| bright-eyed(strong, fit, fresh, well) | |
| bushy-tailed(strong, fit, fresh, well) |
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| APA | Smart Define. (2016). firm thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/firm/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, firm thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>. |
| MLA | Smart Define. "firm thesaurus" 31 March 2016. Web. 29 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms> |