Meanings
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1
adj
badtempered and sulky; gloomy in mood or appearance
The boy sat in sullen silence through the entire meal.
Thesaurus
Etymology
From Middle English solein ('solitary, sole, averse to company'), from Anglo-Norman *solein, from Vulgar Latin *sōlānus, from Latin sōlus ('alone'); the sense shifted from 'solitary' to 'gloomy'.
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