impassiveness impassively • impassivity · · · Info · Definitions · Synonyms · Characters · · impassiveness · · Text Latin · · Script 13 · · Length Definitions · · · (noun) apathy demonstrated by an absence of emotional reactions. Synonyms: emotionlessness, impassivity, phlegm, indifference, stolidity, unemotionality. · · Noun Definition 1 Synonyms · · · emotionlessness · · Synonym 1 impassivity · · Synonym 2 phlegm · · Synonym 3 indifference · · Synonym 4 stolidity · · Synonym 5 unemotionality · · Synonym 6 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E p latin small letter p U+0070 s latin small letter s U+0073 v latin small letter v U+0076