undurchdringlich

== German == === Pronunciation === === Adjective === undurchdringlich (strong nominative masculine singular undurchdringlicher, comparative undurchdringlicher, superlative am undurchdringlichsten) impenetrable === Further reading === “undurchdringlich” in Digitales Wörterbuch der deutschen Sprache “undurchdringlich” in Uni Leipzig: Wortschatz-Lexikon