Impervious
Impervious adjective - Not allowing penetration (as by gas, liquid, or light).
Proofer and impervious are semantically related In some cases you can replace term "Proofer" with "Impervious", this adjectives are similar.
Nearby Word: imperviously
Proofer
Mutual synonyms
Related pairs
Cite this Source
Proofer and Impervious. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/impervious/proofer
Impervious & Proofer. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/impervious/proofer>.
Proofer or Impervious. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/impervious/proofer.
Google Ngram Viewer shows how "impervious" and "proofer" have occurred on timeline