- Definitions|2
- Thesaurus|675
- Abbreviations|0
50 entries under rigid topic. ×
| strong(adjective, set, hard, strength, tough) | |
| solid(adjective, set, strong, hard, severe) | |
| indurate(adjective, set, firm, determined, stiff) | |
| intractable(hard, tough, firm, unreasonable, grim) | |
| robust(adjective, strong, hard, strength, tough) | |
| dense(adjective, set, strong, hard, tough) | |
| durable(adjective, strong, tough, firm, stiff) | |
| heavy(adjective, strong, hard, tough, sturdy) | |
| immutable(hard, resolute, inflexible, strict) | |
| rocklike(adjective, firm, stiff) | |
| unadaptable(hard, resolute, inflexible, strict) | |
| unchangeable(hard, resolute, inflexible, strict) | |
| callous(adjective, set, strong, hard, firm) | |
| insensible(adjective, strong, hard, tough, sturdy) | |
| staunch(hard, resolute, inflexible, strict) | |
| stringent(adjective, hard, severe, stiff, resolute) | |
| thick(adjective, strong, hard, tough, firm) | |
| compact(adjective, set, strong, hard, firm) | |
| compacted(adjective, set, strong, hard, firm) | |
| compressed(adjective, set, strong, hard, firm) |
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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> |