148 entries under obstinate topic. ×
| tireless(adjective, strong, determined, steady, resolute) | |
| implacable(adjective, mean, strong, hard, tough) | |
| indomitable(adjective, strong, hard, tough, determined) | |
| indefatigable(adjective, strong, tough, fit, solid) | |
| purposeful(adjective, strong, tough, determined, serious) | |
| unswayable(adjective, determined, resolute, rigid) | |
| bound(adjective, set, strong, tough, intense) | |
| callous(verb, adjective, close, set, fix) | |
| intractable(adjective, tough, persistent, rigid, inflexible) | |
| mulish(adjective, mean, strong, hard, tough) | |
| rigorous(adjective, strong, hard, complete, tough) | |
| standing pat(adjective, determined, resolute, uncompromising) | |
| unflagging(adjective, strong, tough, fit, solid) | |
| contrary(adjective, determined, resolute, persistent) | |
| harsh(adjective, mean, strong, hard, tough) | |
| headstrong(adjective, hard, tough, rough, harsh) | |
| hidebound(adjective, moderate, determined, resolute, cautious) | |
| pat(adjective, solid, determined, usual, steady) | |
| recalcitrant(adjective, tough, persistent, stubborn) | |
| contumacious(adjective, tough, persistent, stubborn) |
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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> |