- Definitions|0
- Thesaurus|60
- Abbreviations|0
| concrete(adjective, hard, compact, dense) | |
| consolidated(adjective, hard, compact, dense) | |
| dense(adjective, hard, compact) | |
| dimensional(adjective, hard, compact, dense) | |
| erectile | |
| fixed(adjective, hard, compact, dense) | |
| frozen(adjective, hard, compact, dense) | |
| heavy(adjective, hard, compact, dense) | |
| hefty(adjective, hard, compact, dense) | |
| hulk(adjective, hard, compact, dense) | |
| hunk(adjective, hard, compact, dense) | |
| husky(adjective, hard, compact, dense) | |
| inflexible | |
| like granite | |
| massed(adjective, hard, compact, dense) | |
| material(adjective, hard, compact, dense) | |
| packed | |
| physical(adjective, hard, compact, dense) | |
| rigid | |
| rock(adjective, hard, compact, dense) |
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| APA | Smart Define. (2013). rock-hard thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/rock-hard/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "rock-hard thesaurus" https://smartdefine.org/rock-hard/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2013, rock-hard thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/rock-hard/thesaurus/synonyms>. |
| MLA | Smart Define. "rock-hard thesaurus" 17 June 2013. Web. 26 September 2026. <https://smartdefine.org/rock-hard/thesaurus/synonyms> |