Impervious
Impervious adjective - Not allowing penetration (as by gas, liquid, or light).
Steadfast and impervious are semantically related in characteristic topic. In some cases you can use "Steadfast" instead an adjective "Impervious".
Nearby Word: imperviously
Steadfast
Steadfast adjective - Firm in one's allegiance to someone or something.
Impervious and steadfast are semantically related in characteristic topic. Sometimes you can use "Impervious" instead an adjective "Steadfast".
Nearby Words: steadfastness, steadfastly
Mutual synonyms
Related pairs
- firm and impervious
- firm and steadfast
- fast and impervious
- fast and steadfast
- inflexible and impervious
- inflexible and steadfast
- rigid and impervious
- rigid and steadfast
- sturdy and impervious
- sturdy and steadfast
- obstinate and impervious
- obstinate and steadfast
- unyielding and impervious
- unyielding and steadfast
Cite this Source
Steadfast and Impervious. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/impervious/steadfast
Impervious & Steadfast. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/impervious/steadfast>.
Steadfast or Impervious. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/impervious/steadfast.
Google Ngram Viewer shows how "impervious" and "steadfast" have occurred on timeline