148 entries under obstinate topic. ×
| sure(adjective, calm, good, close, clear) | |
| dogged(adjective, mean, strong, hard, tough) | |
| unbendable(adjective, determined, unreasonable, resolute, rigid) | |
| adamantine(adjective, strong, hard, tough, determined) | |
| strict(adjective, close, strong, hard, tough) | |
| iron(noun, adjective, mean, strong, hard) | |
| persevering(adjective, strong, tough, certain, determined) | |
| true(adjective, good, close, clear, strong) | |
| unchangeable(adjective, calm, strong, secure, moderate) | |
| hard-nosed(adjective, mean, clear, strong, hard) | |
| severe(adjective, clear, strong, hard, tough) | |
| stalwart(adjective, calm, strong, sound, tough) | |
| steely(adjective, strong, hard, tough, solid) | |
| stern(adjective, hard, tough, severe, rough) | |
| taut(adjective, strong, hard, secure, rough) | |
| confirmed(adjective, characteristic, hard, rough, harsh) | |
| immutable(adjective, calm, strong, hard, secure) | |
| pertinacious(adjective, strong, tough, determined, steady) | |
| single-minded(adjective, tough, solid, intense, deliberate) | |
| strong-willed(adjective, strong, tough, intense, deliberate) |
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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> |