338 entries under adjective topic. ×
| persistent(strain, firmness, labour, hardiness) | |
| firm(noun, hard, strain, rough) | |
| stiff(hard, tough, strain, rough) | |
| stubborn(characteristic, quality, obstinate, stubbornness) | |
| hard(tough, strain, rough, firm) | |
| strong(strain, firmness, labour, hardiness) | |
| stable(strain, firmness, labour, hardiness) | |
| unyielding(hard, tough, strain, rough) | |
| intractable(control, order, tough, difficulty) | |
| unruly(control, order, difficult, resist) | |
| recalcitrant(control, order, tough, difficult) | |
| rigid(hard, tough, strain, firm) | |
| obstinate(control, order, difficulty, resist) | |
| contumacious(tough, firm, determined, negative) | |
| disobedient(persistent, resistance, obstinate, stubborn) | |
| resistant(strain, firm, solid, firmness) | |
| ungovernable(control, order, difficult, resist) | |
| steadfast(strain, firmness, labour, hardiness) | |
| unmanageable(control, order, hard, tough) | |
| headstrong(tough, firm, determined, negative) |
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| APA | Smart Define. (2015). refractory thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, refractory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>. |
| MLA | Smart Define. "refractory thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms> |