Clear-headed
Impervious and clear-headed are semantically related. In some cases you can use "Impervious" instead an adjective phrase "Clear-headed".
Impervious
Impervious adjective - Not allowing penetration (as by gas, liquid, or light).
Clear-headed and impervious are semantically related. Sometimes you can use "Clear-headed" instead an adjective "Impervious".
Nearby Word: imperviously
Mutual synonyms
Cite this Source
Impervious and Clear-headed. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/clear-headed/impervious
Clear-headed & Impervious. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/clear-headed/impervious>.
Impervious or Clear-headed. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/clear-headed/impervious.