148 entries under obstinate topic. ×
| cruel(adjective, strong, hard, tough, severe) | |
| dyed-in-the-wool(adjective, close, set, strong, hard) | |
| endless(adjective, determined, steady, resolute, persistent) | |
| fierce(adjective, clear, hard, tough, severe) | |
| froward(adjective, persistent, insistent, dogged) | |
| hanging(adjective, determined, resolute, uncompromising) | |
| incessant(adjective, strong, determined, steady, resolute) | |
| insurgent(adjective, persistent, insistent, dogged) | |
| interminable(adjective, determined, steady, resolute, persistent) | |
| narrow(adjective, close, hard, rough, harsh) | |
| narrow-minded(adjective, persistent, insistent, dogged) | |
| obsessive(adjective, persistent, insistent, dogged) | |
| pig-headed(adjective, determined, resolute, uncompromising) | |
| self-willed(tough, determined, fixed, inflexible) | |
| stringent(adjective, set, hard, tough, severe) | |
| unconquerable(adjective, persistent, insistent, dogged) | |
| unregenerate(adjective, persistent, insistent, dogged) | |
| violent(adjective, clear, hard, tough, severe) | |
| willful(tough, determined, fixed, resolute, inflexible) | |
| wrongheaded(adjective, persistent, insistent, dogged) |
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| APA | Smart Define. (2016). firm thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/firm/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "firm thesaurus" https://smartdefine.org/firm/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2016, firm thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/firm/thesaurus/synonyms>. |
| MLA | Smart Define. "firm thesaurus" 31 March 2016. Web. 28 September 2026. <https://smartdefine.org/firm/thesaurus/synonyms> |