For there was no anger or sullenness in Ray's grief; he was just and simply sorry.
Morty fell back on sullenness, and bade him manage it his own way.
His brother, goaded out of his sullenness, turned upon him with a tirade of profane abuse, leaving the boy shamed and silent.
We had confidence in Cypher's sullenness and smouldering ferocity.
"With you," he made answer, and something of sullenness had by this time crept into his voice.
Theodora bent her head and cast down her eyes, not in sullenness, but in sorrow.
Then turning to me—You can bear the imputation of sullenness I see!
sullenness arises from capricious displeasure not founded in reason.
Despite Clarence's sullenness, Warwick had discovered no reason, as yet, to doubt his good faith.
As for her fits of sullenness and irritation, he had been initiated into their mystery on his wedding-day.
1570s, alteration of Middle English soleyn "unique, singular," from Anglo-French *solein, formed on the pattern of Old French soltain, from Old French soul "single" (see sole (n.2)). The sense shift in Middle English from "solitary" to "morose" occurred late 14c.