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DictionarysullenGloomy and withdrawn
adjective

sullen

SUL-un/ˈsʌlən/

Quiet and withdrawn because of resentment or unhappiness.

After the argument, he sits in sullen silence at dinner.

A white teenager sits silently with folded arms and downcast resentful expression at a table.
Etymology
sullenMiddle Englishsolitary, alone

Middle English solein could mean “solitary” or “alone.” This developed into “morose” through the idea of keeping apart through ill humor, connecting physical withdrawal with a resentful, uncommunicative mood.

In context

DoctorRamani13:29
the Sullen grumpiness of an aggrieved adolescent or the insistent whining of a child
Narcissist or emotionally immature? (The difference really matters)

More examples

  • She grows sullen whenever her parents ask about school.
  • His sullen expression tells me he is still upset.
  • The disappointed players give sullen replies to the coach's questions.

Forms

sullen · sullener · sullenest

sullenly adverb — In a gloomy, resentful, withdrawn manner.

sullenness noun — A state of gloomy, resentful withdrawal.

Similar words

sulky
Emphasizes resentful pouting, often over a particular disappointment.
morose
Emphasizes persistent gloom rather than resentment over something specific.
glum
Suggests visible sadness without necessarily implying resentment or withdrawal.