- Definitions|2
- Thesaurus|928
- Abbreviations|0
292 entries under adjective topic. ×
| compact(set, hard, tough, solid) | |
| thick-skinned(noun, calm, restrained, detached) | |
| unapproachable(detached, unaffected, unyielding, unbending) | |
| unfeeling(noun, bad, cold, indifferent) | |
| unsusceptible(noun, resist, unresponsive, oblivious) | |
| untouched(calm, restrained, subdued, impassive) | |
| firm(set, strong, hard, tough) | |
| unmoved(calm, indifferent, restrained, detached) | |
| unyielding(hard, tough, solid, rigid) | |
| waterproof(water, resistant) | |
| cool(calm, indifferent, restrained, detached) | |
| hard(set, tough, firm, solid) | |
| impassive(calm, restrained, unconcerned, subdued) | |
| insusceptible(resist, resistant) | |
| inviolable(secure, solid, safe, dense) | |
| pachydermatous(noun, insensibility) | |
| sealed(fast, short, unyielding, unbending) | |
| stony(unresponsive, oblivious, unmoved) | |
| unattainable(inaccessible, impossible, impossibility) | |
| unreceptive(unyielding, unbending, unable, disinclined) |
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| APA | Smart Define. (2015). impervious thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impervious/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impervious thesaurus" https://smartdefine.org/impervious/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, impervious thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impervious/thesaurus/synonyms>. |
| MLA | Smart Define. "impervious thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/impervious/thesaurus/synonyms> |