74 entries under determined topic. ×
| contradictory(negative, hostile, fixed, different) | |
| pigheaded(adjective, tough, firm, difficult) | |
| dogged(adjective, tough, firm, unreasonable) | |
| immovable(adjective, tough, firm, difficult) | |
| intransigent(adjective, tough, firm, stubborn) | |
| resolved(adjective, fixed, persistent, obstinate) | |
| bullheaded(adjective, tough, firm, difficult) | |
| heady(adjective, fixed, stubborn, obstinacy) | |
| stiff-necked(adjective, tough, firm, deliberate) | |
| unflinching(adjective, fixed, persistent, obstinate) | |
| fixed(adjective, hard, tough, rough, firm) | |
| hard-shell(adjective, persistent, impulsive, obstinate) | |
| strong-minded(adjective, fixed, impulsive, stubborn) | |
| dead set on(expression, firm, fixed, stubborn) | |
| foolhardy(impulsive, stubborn, reckless, impetuous) | |
| hard-core(firm, impulsive, stubborn, reckless) | |
| hard-nosed(firm, impulsive, obstinate, stubborn) | |
| hardened(adjective, hard, tough, firm, solid) | |
| heedless(violent, fast, quick, impulsive) | |
| imprudent(impulsive, stubborn, reckless, impetuous) |
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| APA | Smart Define. (2015). refractory thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, refractory thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>. |
| MLA | Smart Define. "refractory thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms> |