underlip underlining • underlive · · · Info · Definitions · Characters · · underlip · · Text Latin · · Script 8 · · Length Definitions · · · (noun) the lower lip. · · Noun Definition 1 Characters · · d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 u latin small letter u U+0075