indecorum indecorousness • indeed · · · Info · Definitions · Synonyms · Antonyms · Characters · · indecorum · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a lack of decorum. Synonyms: indecorousness. · · Noun Definition 1 (noun) an act of undue intimacy. Synonyms: familiarity, impropriety, liberty. · · Noun Definition 2 Synonyms · · · indecorousness · · Synonym 1 familiarity · · Synonym 2 impropriety · · Synonym 3 liberty · · Synonym 4 Antonyms · · · decorum · · Antonym 0 decorousness · · Antonym 1 Characters · · c latin small letter c U+0063 d latin small letter d U+0064 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 o latin small letter o U+006F r latin small letter r U+0072 u latin small letter u U+0075