unctuousness unctuously • uncubbed · · · Info · Definitions · Synonyms · Characters · · unctuousness · · Text Latin · · Script 12 · · Length Definitions · · · (noun) smug self-serving earnestness. Synonyms: fulsomeness, oiliness, oleaginousness, smarminess, unction. · · Noun Definition 1 Synonyms · · · fulsomeness · · Synonym 1 oiliness · · Synonym 2 oleaginousness · · Synonym 3 smarminess · · Synonym 4 unction · · Synonym 5 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075