- Definitions|2
- Thesaurus|3k
- Abbreviations|0
124 entries under tough topic. ×
| close(adjective, hard, solid, stiff) | |
| compact(adjective, close, set, strong, hard) | |
| concentrated(adjective, set, strong, hard) | |
| concrete(adjective, hard, solid, rigid) | |
| fast(adjective, close, strong, secure) | |
| insubordinate(adjective, firm, unreasonable, obstinate) | |
| robust(adjective, strong, hard, solid) | |
| rugged(adjective, set, strong, hard) | |
| solidified(adjective, hard, firm, solid) | |
| stalwart(adjective, strong, hard, firm) | |
| unflexible(adjective, hard, firm, solid) | |
| unmanageable(adjective, firm, determined, unreasonable) | |
| bitter(adjective, set, strong, hard) | |
| by the book(expression, adjective, idiom, strong, hard) | |
| cantankerous(firm, determined, unreasonable, fixed) | |
| congealed(adjective, hard, firm, solid) | |
| cussed(firm, unreasonable, obstinate, stubborn) | |
| disciplinary(adjective, strong, hard, severe) | |
| dyed-in-the-wool(adjective, set, strong, hard) | |
| forbidding(adjective, person, strong, hard) |
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| APA | Smart Define. (2016). inflexible thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/inflexible/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "inflexible thesaurus" https://smartdefine.org/inflexible/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2016, inflexible thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/inflexible/thesaurus/synonyms>. |
| MLA | Smart Define. "inflexible thesaurus" 24 March 2016. Web. 1 October 2026. <https://smartdefine.org/inflexible/thesaurus/synonyms> |