American English

Definition of sullen adjective from the Oxford Advanced American Dictionary

     

    sullen

     adjective
    adjective
    NAmE//ˈsʌlən//
     
    (disapproving)
     
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  1. 1bad-tempered and not speaking, either on a particular occasion or because it is part of your character Bob looked pale and sullen. She gave him a sullen glare. sullen teenagers
  2. 2(literary) (of the sky or weather) dark and unpleasant a sullen gray sky
 
adverb
NAmE//ˈsʌlənnəs//
 
noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: sullen