75 entries under adjective topic. ×
| all-or-nothing | |
| concrete(unimportant, hardened) | |
| doctrinaire(opinionated, dogmatic) | |
| hardheaded | |
| immutable | |
| inhumane | |
| intractable | |
| iron(hard, tough, soft, inflexible) | |
| obdurate | |
| perverse | |
| pigheaded(reasonable, stubborn) | |
| starched | |
| static | |
| steely(yielding, irresolute) | |
| strong | |
| taut | |
| unbending | |
| wooden(stiff, inflexible) | |
| inexorable(kind, cruel, pitiless) | |
| unadaptable(soft, firm, stiff, yielding) |
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| APA | Smart Define. (2016). flexible thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/flexible/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "flexible thesaurus" https://smartdefine.org/flexible/thesaurus/antonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, flexible thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/flexible/thesaurus/antonyms>. |
| MLA | Smart Define. "flexible thesaurus" 28 March 2016. Web. 26 September 2026. <https://smartdefine.org/flexible/thesaurus/antonyms> |