Synonyms|182Antonyms|80|Broader|2Narrower|0Related|667

5 entries under impervious topic. ×

8
dense(adjective, solid, resistant)
2
sealed(adjective, unaffected, unyielding, unbending, resistant)
1
watertight(unaffected, unyielding, unbending, resistant)
0
resistant(unaffected, unyielding, unbending, unreceptive)
0
solid(adjective, dense, resistant)
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APASmart Define. (2015). impassable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/impassable/thesaurus/synonyms
ChicagoSmart Define. 2015. "impassable thesaurus" https://smartdefine.org/impassable/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, impassable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/impassable/thesaurus/synonyms>.
MLASmart Define. "impassable thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/impassable/thesaurus/synonyms>