impénétrable

== French == === Etymology === Borrowed from Latin impenētrābilis. By surface analysis, im- +‎ pénétrable. === Pronunciation === IPA(key): /ɛ̃.pe.ne.tʁabl/ === Adjective === impénétrable (plural impénétrables) impenetrable une barrière impénétrable ― an impenetrable barrier (figuratively) not understandable, mysterious ==== Derived terms ==== impénétrablement === Further reading === “impénétrable”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012