imperturbability impertransible • imperturbable · · · Info · Definitions · Synonyms · Characters · · imperturbability · · Text Latin · · Script 16 · · Length 7 · · Syllables Definitions · · · (noun) calm and unruffled self-assurance. Synonyms: coolness, imperturbableness. Example: "He performed with all the coolness of a veteran." · · Noun Definition 1 Synonyms · · · coolness · · Synonym 1 imperturbableness · · 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 p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079