- Definitions|2
- Thesaurus|675
- Abbreviations|0
50 entries under rigid topic. ×
| inflexible(adjective, strong, hard, tough, firm) | |
| adamant(adjective, strong, hard, tough, firm) | |
| stubborn(adjective, characteristic, quality, strong, hard) | |
| unyielding(adjective, strong, hard, tough, firm) | |
| tough(adjective, strong, hard, firm, unreasonable) | |
| flinty(adjective, strong, hard, tough, firm) | |
| unbreakable(adjective, strong, tough, severe, firm) | |
| hard(adjective, strong, strength, tough, firm) | |
| impenetrable(adjective, set, tough, firm, stiff) | |
| firm(adjective, strong, hard, tough, determined) | |
| indestructible(adjective, firm, unyielding, steely) | |
| rock-hard(adjective, firm, unyielding, steely) | |
| resolute(adjective, hard, determined, strict) | |
| steely(adjective, strong, hard, tough, firm) | |
| stony(adjective, firm, stiff, stubborn) | |
| iron(adjective, set, strong, hard, tough) | |
| stiff(adjective, set, firm, harsh, determined) | |
| rocky(adjective, set, firm, stiff, compact) | |
| set(adjective, severe, firm, harsh, determined) | |
| hardened(adjective, strong, firm, determined, stiff) |
For more, visit
Adamantine on
Power Thesaurus
| APA | Smart Define. (2015). adamantine thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/adamantine/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "adamantine thesaurus" https://smartdefine.org/adamantine/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, adamantine thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/adamantine/thesaurus/synonyms>. |
| MLA | Smart Define. "adamantine thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/adamantine/thesaurus/synonyms> |