impenetrable impenetrability • impenetrableness · · · Info · Synonyms · Characters · · impenetrable · · Text Latin · · Script 12 · · Length Synonyms · · · dense · · Synonym 1 heavy · · Synonym 2 Characters · · a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074