14 entries under rough topic. ×
| firm(adjective, hard, tough, severe) | |
| hard-line(adjective, hard, tough, severe) | |
| stern(adjective, hard, tough, severe) | |
| strict(adjective, hard, tough, severe) | |
| callous(adjective, hard, tough, severe) | |
| hard-nosed(adjective, hard, tough, severe) | |
| headstrong(adjective, hard, tough, severe) | |
| inflexible(adjective, hard, tough, severe) | |
| obdurate(adjective, hard, tough, severe) | |
| obstinate(adjective, hard, tough, severe) | |
| tough(adjective, hard, harsh, obstinate) | |
| unbending(adjective, hard, tough, severe) | |
| hard as nails(expression, adjective, idiom, tough) | |
| unfeeling(adjective, tough, hardened, cynical) |
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| APA | Smart Define. (2011). hard-shelled thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/hard-shelled/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "hard-shelled thesaurus" https://smartdefine.org/hard-shelled/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2011, hard-shelled thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/hard-shelled/thesaurus/synonyms>. |
| MLA | Smart Define. "hard-shelled thesaurus" 24 May 2011. Web. 25 September 2026. <https://smartdefine.org/hard-shelled/thesaurus/synonyms> |