338 entries under adjective topic. ×
| fast(strain, firmness, labour, hardiness) | |
| durable(strain, firmness, labour, hardiness) | |
| resilient(strain, firmness, labour, hardiness) | |
| substantial(strain, firmness, labour, hardiness) | |
| tenable(strain, firmness, labour, hardiness) | |
| unalterable(hard, strain, rough, harsh) | |
| withstanding(strain, firmness, labour, hardiness) | |
| contrary(tough, difficult, cross, wild) | |
| immune(strain, firmness, labour, hardiness) | |
| invariable(strain, firmness, labour, hardiness) | |
| rebellious(tough, firm, negative, obstinate) | |
| rock-solid(strain, firmness, labour, hardiness) | |
| stout(strain, firmness, labour, hardiness) | |
| tight(strain, firm, solid, firmness) | |
| fractious(control, order, cross, resist) | |
| resist(verb, strain, firmness, labour) | |
| perverse(mean, tough, difficulty, firm) | |
| insubordinate(tough, firm, negative, hostile) | |
| wayward(tough, difficult, violent, wild) | |
| defiant(persistent, obstinate, insistent, dogged) |
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| APA | Smart Define. (2015). refractory thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/refractory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "refractory thesaurus" https://smartdefine.org/refractory/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, refractory thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/refractory/thesaurus/synonyms>. |
| MLA | Smart Define. "refractory thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/refractory/thesaurus/synonyms> |