impenetrable

== English == === Alternative forms === (misspelling) inpenetrable === Etymology === From Middle English inpenetrabel, inpenetrabyle, from Middle French impenetrable or directly from its etymon, Latin impenetrābilis. By surface analysis, im- +‎ penetrable. === Pronunciation === IPA(key): /ɪmˈpɛnətɹəbəl/, /ɪmˈpɛnɪtɹəbəl/ Hyphenation: im‧pen‧e‧tra‧ble === Adjective === impenetrable (not comparable) Not penetrable. Synonyms: impermeable, impregnable Antonyms: penetrable, permeable, pregnable Opaque; obscure; not translucent or transparent. (figuratively) Incomprehensible; fathomless; inscrutable. Synonyms: unfathomable; see also Thesaurus:incomprehensible Antonyms: fathomable; see also Thesaurus:comprehensible ==== Derived terms ==== ==== Translations ==== === Noun === impenetrable (plural impenetrables) A person not openly given to friendship. (clarification of this definition is needed.) === References === == Catalan == === Etymology === From Latin impenetrābilis. === Pronunciation === IPA(key): (Central, Balearic) [im.pə.nəˈtɾab.blə] IPA(key): (Valencia) [im.pe.neˈtɾa.ble] === Adjective === impenetrable m or f (masculine and feminine plural impenetrables) impenetrable === Further reading === “impenetrable”, in Diccionari de la llengua catalana [Dictionary of the Catalan Language] (in Catalan), second edition, Institute of Catalan Studies [Catalan: Institut d'Estudis Catalans], April 2007 “impenetrable”, in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana, 2026 “impenetrable” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua. “impenetrable” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962. == Spanish == === Etymology === From Latin impenetrābilis. === Pronunciation === IPA(key): /impeneˈtɾable/ [ĩm.pe.neˈt̪ɾa.β̞le] Rhymes: -able Syllabification: im‧pe‧ne‧tra‧ble === Adjective === impenetrable m or f (masculine and feminine plural impenetrables) impenetrable ==== Derived terms ==== === Further reading === “impenetrable”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025