- Definitions|1
- Thesaurus|487
- Abbreviations|0
| positive(set, certain, unquestionable, indisputable, unassailable) | |
| powerful(adjective, severe, harsh, stiff, rigid) | |
| prearranged(adjective, firm, determined, usual, regular) | |
| predetermined(adjective, firm, determined, usual, regular) | |
| prescribed(adjective, firm, determined, usual, regular) | |
| procrustean | |
| proven(set, certain, unquestionable, indisputable, unassailable) | |
| purist | |
| puristic | |
| puritan | |
| puritanic | |
| puritanical | |
| ram(noun, combatant) | |
| regular(adjective, firm, determined, usual, planned) | |
| remorseless | |
| resolute(adjective, set, hard, firm, determined) | |
| resolved(adjective, firm, determined, usual, regular) | |
| rigorist | |
| rigoristic | |
| rockbound |
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| APA | Smart Define. (2015). ironclad thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/ironclad/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "ironclad thesaurus" https://smartdefine.org/ironclad/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, ironclad thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/ironclad/thesaurus/synonyms>. |
| MLA | Smart Define. "ironclad thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/ironclad/thesaurus/synonyms> |