Impervious
Impervious adjective - Not allowing penetration (as by gas, liquid, or light).
Safe and impervious are semantically related In some cases you can use "Safe" instead an adjective "Impervious".
Nearby Word: imperviously
Safe
Safe adjective - Not exposed to the threat of loss or injury.
Impervious and safe are semantically related in free from harm topic. Sometimes you can use "Impervious" instead an adjective "Safe".
Mutual synonyms
Both words in one sentence
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Weaksauce Weakness: Troops garrisoned in buildings are impervious to attack, and can bring substantial firepower to bear against enemies, racking up experience while safe from retaliation and getting run over.
Cite this Source
Safe and Impervious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/impervious/safe
Impervious & Safe. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/impervious/safe>.
Safe or Impervious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/impervious/safe.
Google Ngram Viewer shows how "impervious" and "safe" have occurred on timeline