<p><strong>Adjective</strong></p><ul><li>not permitting penetration or passage; impenetrable: The coat is impervious to rain.</li><li>incapable of being injured or impaired: impervious to wear and tear.</li><li>incapable of being influenced, persuaded, or affected: impervious to reason; impervious to another's suffering.</li><li>Synonyms: closed, invulnerable</li></ul><p><strong>End of Response</strong></p>