- Definitions|0
- Thesaurus|60
- Abbreviations|0
10 entries under steely topic. ×
| impenetrable(adjective, firm, rigid, unyielding) | |
| indestructible(adjective, firm, rigid, unyielding) | |
| adamantine(adjective, firm, rigid, unyielding) | |
| flinty(adjective, firm, rigid, unyielding) | |
| tough(adjective, firm, rigid, unyielding) | |
| unbreakable(adjective, firm, rigid, unyielding) | |
| hard(adjective, firm, compact, rigid, dense) | |
| rocky(adjective, firm, rigid, unyielding) | |
| stony(adjective, firm, rigid, unyielding) | |
| adamant(adjective, firm, rigid, unyielding) |
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| 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> |