Impervious
Impervious adjective - Impossible to get through or into.
Usage example: the rain forest is impervious to all but the most dedicated explorers
Solid and impervious are semantically related. In some cases you can use "Solid" instead an adjective "Impervious".
Nearby Word: imperviously
Solid
Solid adjective - Based on sound reasoning or information.
Impervious and solid are semantically related. Sometimes you can use "Impervious" instead an adjective "Solid".
Mutual synonyms
Both words in one sentence
-
They can temporarily turn themselves into solid steel, making them impervious to attacks.
Source: Heavily Armored Mook -
Oddly, though it can disintegrate solid iron, it will not eat through the much softer earth once it reaches down that far, and a few kinds of rock walls are impervious to it.
Source: Hollywood Acid - The Binding of Isaac had Knights, which were encased in a solid porcelain-like shell that was impervious to most tear types, with only the piercing tears or poison tears able to damage them.
Source: Heavily Armored Mook
Cite this Source
Solid and Impervious. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/impervious/solid
Impervious & Solid. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/impervious/solid>.
Solid or Impervious. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/impervious/solid.
Google Ngram Viewer shows how "impervious" and "solid" have occurred on timeline