- Definitions|2
- Thesaurus|716
- Abbreviations|0
23 entries under strain topic. ×
| strong(adjective, sound, reasonable, rational) | |
| firm(adjective, true, firmness, constant) | |
| hard(adjective, firmness, labour, hardiness) | |
| sound(adjective, reasonable, firm, true) | |
| stable(adjective, firm, true, firmness) | |
| stiff(adjective, firmness, labour, hardiness) | |
| fast(adjective, firm, firmness, constant) | |
| tenable(adjective, firmness, labour, safety) | |
| unyielding(adjective, firmness, labour, hardiness) | |
| proof(adjective, firmness, labour, hardiness) | |
| resistant(adjective, firmness, labour, hardiness) | |
| steadfast(adjective, firmness, labour, hardiness) | |
| rigid(adjective, firmness, labour, hardiness) | |
| robust(adjective, firmness, labour, hardiness) | |
| substantial(adjective, firmness, labour, hardiness) | |
| tight(adjective, firm, true, firmness) | |
| constant(adjective, firmness, labour, hardiness) | |
| durable(adjective, firmness, labour, hardiness) | |
| immune(adjective, firmness, safe, labour) | |
| lasting(adjective, firmness, labour, hardiness) |
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| APA | Smart Define. (2015). impregnable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/impregnable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impregnable thesaurus" https://smartdefine.org/impregnable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, impregnable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/impregnable/thesaurus/synonyms>. |
| MLA | Smart Define. "impregnable thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/impregnable/thesaurus/synonyms> |