- Definitions|2
- Thesaurus|3k
- Abbreviations|0
153 entries under firm topic. ×
| solid(adjective, strong, hard, secure, smooth) | |
| unswerving(adjective, strong, smooth, tough) | |
| incompliant(adjective, tough, solid, resist) | |
| hardened(adjective, person, hard, tough) | |
| immutable(adjective, set, hard, secure, rough) | |
| staunch(adjective, strong, tough, flat) | |
| callous(adjective, person, hard, tough, rough) | |
| opinionated(adjective, determined, unreasonable, fixed) | |
| perverse(adjective, mean, hard, deliberate) | |
| hard-line(adjective, strong, hard, tough, severe) | |
| single-minded(adjective, tough, harsh, cruel) | |
| unchanging(adjective, moderate, severe, harsh) | |
| hard-boiled(adjective, person, mean, strong, hard) | |
| recalcitrant(adjective, tough, unreasonable, fixed) | |
| resistant(adjective, hard, determined, resolute) | |
| self-willed(adjective, tough, determined, resolute) | |
| tight(adjective, close, strong, hard, tough) | |
| constant(adjective, strong, secure, moderate, flat) | |
| contumacious(adjective, tough, determined, unreasonable) | |
| indurate(adjective, mean, hard, determined) |
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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> |