rationalness rationally • rationate · · · Info · Definitions · Synonyms · Characters · · rationalness · · Text Latin · · Script 12 · · Length Definitions · · · (noun) the quality of being consistent with or based on logic. Synonyms: rationality. · · Noun Definition 1 Synonyms · · · rationality · · Synonym 1 Characters · · a latin small letter a U+0061 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 o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074