- Definitions|1
- Thesaurus|241
- Abbreviations|0
66 entries under inflexible topic. ×
| obdurate(hard, resolute, rigid, strict) | |
| planned | |
| prearranged | |
| precise | |
| relentless(hard, resolute, rigid, strict) | |
| resolute(hard, rigid, strict, obstinate) | |
| resolute established(expression, intent) | |
| resolved | |
| restricted | |
| rigged | |
| rigorous(hard, resolute, rigid, strict) | |
| set-up | |
| stated | |
| stiff(adjective, set, hard, resolute, rigid) | |
| stipulated | |
| sure | |
| unblinking | |
| undeviating | |
| unfaltering | |
| unflinching |
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| APA | Smart Define. (2015). hard-and-fast thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/hard-and-fast/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hard-and-fast thesaurus" https://smartdefine.org/hard-and-fast/thesaurus/synonyms (accessed October 2, 2026). |
| Harvard | Smart Define 2015, hard-and-fast thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/hard-and-fast/thesaurus/synonyms>. |
| MLA | Smart Define. "hard-and-fast thesaurus" 14 April 2015. Web. 2 October 2026. <https://smartdefine.org/hard-and-fast/thesaurus/synonyms> |