Impervious
Impervious adjective - Impossible to get through or into.
Usage example: the rain forest is impervious to all but the most dedicated explorers
Rigid and impervious are semantically related. In some cases you can use "Rigid" instead an adjective "Impervious".
Nearby Word: imperviously
Rigid
Rigid adjective - Not allowing for any exceptions or loosening of standards.
Impervious and rigid are semantically related. Sometimes you can use "Impervious" instead an adjective "Rigid".
Mutual synonyms
Related pairs
Cite this Source
Rigid and Impervious. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/impervious/rigid
Impervious & Rigid. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/impervious/rigid>.
Rigid or Impervious. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/impervious/rigid.
Google Ngram Viewer shows how "impervious" and "rigid" have occurred on timeline