irresistibleness irresistible • irresistibly · · · Info · Definitions · Synonyms · Characters · · irresistibleness · · Text Latin · · Script 16 · · Length Definitions · · · (noun) the quality of being overpowering and impossible to resist. Synonyms: irresistibility. · · Noun Definition 1 Synonyms · · · irresistibility · · Synonym 1 Characters · · 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 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074