- Definitions|1
- Thesaurus|306
- Abbreviations|0
| insulator | |
| interested(adjective, sympathetic, prejudiced, opinionated, biased) | |
| inveterate | |
| limited(adjective, prejudiced, opinionated, biased, one-sided) | |
| loyal | |
| member of the old guard(noun, expression, idiom, conservative, reactionary) | |
| member of the old school(noun, expression, idiom, conservative, reactionary) | |
| mulish | |
| narrow-minded(adjective, prejudiced, opinionated, biased, one-sided) | |
| obdurate | |
| obstinate | |
| old-school(adjective, traditional) | |
| parochial(adjective, prejudiced, opinionated, biased, one-sided) | |
| persistent | |
| pertinacious | |
| pigheaded | |
| praetorian(noun, person) | |
| pullback(noun, person) | |
| rebellious | |
| refractory |
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| APA | Smart Define. (2015). diehard thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/diehard/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "diehard thesaurus" https://smartdefine.org/diehard/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, diehard thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/diehard/thesaurus/synonyms>. |
| MLA | Smart Define. "diehard thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/diehard/thesaurus/synonyms> |