sullenness sullen-natured • sullen-seeming · · · Info · Definitions · Synonyms · Characters · · sullenness · · Text Latin · · Script 10 · · Length 3 · · Syllables Definitions · · · (noun) a gloomy ill-tempered feeling. Synonyms: moroseness, glumness. · · Noun Definition 1 (noun) a sullen moody resentful disposition. Synonyms: sulkiness, moroseness, sourness. · · Noun Definition 2 Synonyms · · · moroseness · · Synonym 1 glumness · · Synonym 2 sulkiness · · Synonym 3 sourness · · Synonym 4 Characters · · e latin small letter e U+0065 l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073 u latin small letter u U+0075