- Definitions|0
- Thesaurus|60
- Abbreviations|0
47 entries under adjective topic. ×
| impenetrable(firm, rigid, unyielding, steely) | |
| indestructible(firm, rigid, unyielding, steely) | |
| adamantine(firm, rigid, unyielding, steely) | |
| flinty(firm, rigid, unyielding, steely) | |
| tough(firm, rigid, unyielding, steely) | |
| unbreakable(firm, rigid, unyielding, steely) | |
| hard(firm, compact, rigid, dense) | |
| rocky(firm, rigid, unyielding, steely) | |
| steely(firm, rigid, unyielding) | |
| stony(firm, rigid, unyielding, steely) | |
| adamant(firm, rigid, unyielding, steely) | |
| firm(hard, solid, compact, dense) | |
| set(hard, compact, dense) | |
| solid(hard, firm, compact, dense) | |
| unyielding(hard, compact, dense) | |
| brick wall(expression, hard, compact, dense) | |
| close(hard, compact, dense) | |
| compact(hard, dense) | |
| compacted(hard, compact, dense) | |
| concentrated(hard, compact, dense) |
For more, visit
Rock-hard on
Power Thesaurus
| APA | Smart Define. (2013). rock-hard thesaurus. Retrieved September 27, 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 27, 2026). |
| Harvard | Smart Define 2013, rock-hard thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/rock-hard/thesaurus/synonyms>. |
| MLA | Smart Define. "rock-hard thesaurus" 17 June 2013. Web. 27 September 2026. <https://smartdefine.org/rock-hard/thesaurus/synonyms> |