- Definitions|2
- Thesaurus|3k
- Abbreviations|0
210 entries under hard topic. ×
| mechanical(adjective, firm, solid, stiff) | |
| mortified(adjective, strong, tough, severe) | |
| numbed(adjective, firm, solid, stiff) | |
| petrified(adjective, firm, solid, rigid) | |
| rheumatic(adjective, firm, solid, stiff) | |
| serious(adjective, strong, tough, severe) | |
| soulless(adjective, careless, indifferent, cruel) | |
| spiritless(adjective, careless, indifferent, cruel) | |
| starchy(adjective, strong, firm, solid) | |
| stiff as a board(expression, adjective, idiom, firm) | |
| stout(adjective, strong, tough, firm) | |
| thick(adjective, strong, tough, firm) | |
| thick-skinned(adjective, mean, careless, indifferent) | |
| thickened(adjective, firm, solid, stiff) | |
| torpid(adjective, careless, indifferent, cruel) | |
| tough nut to crack(expression, adjective, idiom, mean) | |
| toughened(adjective, careless, indifferent, cruel) | |
| unbreakable(adjective, strong, severe, firm) | |
| unemotional(adjective, mean, harsh, unfeeling) | |
| unimpressible(adjective, mean, harsh, stubborn) |
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| APA | Smart Define. (2016). inflexible thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed September 30, 2026). |
| Harvard | Smart Define 2016, inflexible thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>. |
| MLA | Smart Define. "inflexible thesaurus" 24 March 2016. Web. 30 September 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms> |