sullen
[adjective]
Synonyms: morose, cross, dour, glowering, moody, sour, surly, unsociable

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Contrasted words: easy, gay, high-spirited, insouciant, lighthearted, smiling
Related Words: moody, tenebrific, tenebrose, tenebrous, frowning, glowering, lowering, scowling, cross, fretful, grumpy, ill-humored, peevish, petulant, pouting, pouty, sour, black, hostile, malevolent, malicious, malign, mean, runty, cynical, pessimistic

[TahlilGaran] English Synonym Dictionary ▲

sul‧len /ˈsʌlən/ adjective
[Date: 1300-1400; Origin: Probably from an unrecorded Anglo-French solein 'single, solitary, sullen', from Latin solus 'alone']

1. angry and silent, especially because you feel life has been unfair to you ⇒ morose:
Bill sat in sullen silence and refused to eat his lunch.
a look of sullen resentment

2. literary a sullen sky or sea is dark and looks as if bad weather is coming Synonym : overcast
—sullenly adverb
—sullenness noun [uncountable]

[TahlilGaran] Dictionary of Contemporary English ▲