78 entries under hard topic. ×
| close-grained(adjective, close, set, tough) | |
| congealed(adjective, set, tough, firm) | |
| fixed(adjective, set, strong, firm) | |
| hardened(adjective, set, strong, tough) | |
| hefty(adjective, strong, heavy, substantial) | |
| husky(adjective, strong, heavy, deep) | |
| impervious(adjective, set, tough, solid) | |
| jelled(adjective, set, tough, solid) | |
| rocklike(adjective, strong, firm, substantial) | |
| tough(adjective, set, firm, solid) | |
| unshakable(adjective, strong, substantial, tight) | |
| adamantine(adjective, set, strong, firm) | |
| blubbery(deep, fat, broad, bulky) | |
| brick wall(expression, adjective, strong, substantial) | |
| broad(deep, fat, bulky) | |
| bulky(heavy, deep, sturdy, fat) | |
| dimensional(adjective, strong, substantial, tight) | |
| fine-grained(solid, rigid) | |
| frozen(adjective, dense, rock-hard) | |
| hard-bitten |
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| APA | Smart Define. (2016). compact thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/compact/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "compact thesaurus" https://smartdefine.org/compact/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, compact thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/compact/thesaurus/synonyms>. |
| MLA | Smart Define. "compact thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/compact/thesaurus/synonyms> |