113 entries under set topic. ×
| toughen(verb, close, fix, settle) | |
| turbid(adjective, solid, heavy, deep) | |
| vitrified(adjective, close, fix, firm) | |
| vitrify(verb, close, fix, settle) | |
| adamantine(adjective, strong, hard, firm) | |
| all-in-one | |
| casehardened(close, firm, dry, harden) | |
| complement | |
| hard-handed(adjective, strong, hard, stubborn) | |
| hard as nails(expression, adjective, idiom, strong) | |
| indurated(adjective, strong, hard, firm) | |
| rocky(adjective, strong, hard, firm) | |
| stony(adjective, strong, hard, firm) |
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| APA | Smart Define. (2016). compact thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/compact/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "compact thesaurus" https://smartdefine.org/compact/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, compact thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/compact/thesaurus/synonyms>. |
| MLA | Smart Define. "compact thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/compact/thesaurus/synonyms> |