107 entries under obstinate topic. ×
| immutable(adjective, hard, severe, rough, harsh) | |
| incurable(tough, difficult, wild, awkward) | |
| insoluble(tough, difficult, wild, awkward) | |
| inveterate(adjective, persistent, insistent, dogged) | |
| invincible(adjective, persistent, insistent, dogged) | |
| mean(irritable, restless, stubborn, disorderly) | |
| narrow-minded(adjective, persistent, insistent, dogged) | |
| obsessive(adjective, persistent, insistent, dogged) | |
| pat(tough, difficult, wild, awkward) | |
| persevering(adjective, tough, firm, unreasonable, grim) | |
| pig-headed(determined, impulsive, stubborn, reckless) | |
| pugnacious(adjective, hard, severe, rough, harsh) | |
| ruffianly(adjective, hard, severe, rough, harsh) | |
| stouthearted(adjective, persistent, insistent, dogged) | |
| strict(adjective, persistent, insistent, dogged) | |
| taut(adjective, hard, rough, firm, harsh) | |
| unconquerable(adjective, persistent, insistent, dogged) | |
| unreasonable(tough, firm, grim, inflexible) | |
| unresponsive | |
| vicious(adjective, hard, severe, rough, harsh) |
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Refractory on
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| APA | Smart Define. (2015). refractory thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, refractory thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>. |
| MLA | Smart Define. "refractory thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms> |