- Definitions|2
- Thesaurus|675
- Abbreviations|0
150 entries under adjective topic. ×
| immovable(strong, hard, tough, cruel) | |
| implacable(strong, hard, tough, resist) | |
| grim(strong, hard, tough, resist) | |
| determined(strong, hard, tough, severe) | |
| resolute(hard, determined, rigid, strict) | |
| steely(strong, hard, tough, firm) | |
| stony(firm, stiff, rigid, stubborn) | |
| iron(set, strong, hard, tough) | |
| stern(determined, resolute, uncompromising, unshakeable) | |
| stiff(set, firm, harsh, determined) | |
| rocky(set, firm, stiff, compact) | |
| uncompliant(tough, firm, resist, determined) | |
| fixed(tough, severe, determined, resolute) | |
| incompliant(resist, determined, resolute, persistent) | |
| obstinate(cruel, determined, resolute, pitiless) | |
| set(severe, firm, harsh, determined) | |
| brassbound(resist, determined, resolute, persistent) | |
| die-hard(resist, determined, resolute, persistent) | |
| hardheaded(strong, hard, tough, firm) | |
| pat(determined, resolute, uncompromising, unshakeable) |
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| APA | Smart Define. (2015). adamantine thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/adamantine/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "adamantine thesaurus" https://smartdefine.org/adamantine/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, adamantine thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/adamantine/thesaurus/synonyms>. |
| MLA | Smart Define. "adamantine thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/adamantine/thesaurus/synonyms> |