- Definitions|2
- Thesaurus|931
- Abbreviations|0
72 entries under adjective topic. ×
| impenetrable(solid, dense, unaffected, unyielding) | |
| insurmountable(do, unreasonable, useless, remote) | |
| impervious(solid, unreasonable, useless, absurd) | |
| inaccessible(unreasonable, useless, out, absurd) | |
| dense(solid, resistant, impervious) | |
| indomitable(steadfast, unyielding, insuperable) | |
| impermeable(solid, dense, unaffected, unyielding) | |
| insuperable(strong, secure, do, resolute) | |
| unpassable | |
| blocked(dark, inaccessible) | |
| pathless(closure, closed) | |
| thick(solid, dense) | |
| invincible | |
| unconquerable | |
| closed(dark, inaccessible) | |
| obscure(solid, dense) | |
| obstructed(dark, closed, inaccessible) | |
| unsurmountable | |
| blockaded | |
| compact(solid, dense) |
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| APA | Smart Define. (2015). impassable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/impassable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impassable thesaurus" https://smartdefine.org/impassable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, impassable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/impassable/thesaurus/synonyms>. |
| MLA | Smart Define. "impassable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/impassable/thesaurus/synonyms> |