Impervious
Impervious adjective - Not allowing penetration (as by gas, liquid, or light).
Unreachable and impervious are semantically related In some cases you can use "Unreachable" instead an adjective "Impervious".
Nearby Word: imperviously
Unreachable
Unreachable adjective - Hard or impossible to get to or get at.
Impervious and unreachable are semantically related in inaccessible topic. You can use "Impervious" instead an adjective "Unreachable".
Mutual synonyms
Cite this Source
Unreachable and Impervious. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/impervious/unreachable
Impervious & Unreachable. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/impervious/unreachable>.
Unreachable or Impervious. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/impervious/unreachable.
Google Ngram Viewer shows how "impervious" and "unreachable" have occurred on timeline