1. to sulk more persistently or intensely than someone else; to exceed in sulking
Usage: informal; third person singular present tense of 'outsulk'

Examples

• She outsulks her brother whenever she doesn't get her way.
• He outsulks everyone in the room when he's upset.
• The teenager outsulks her parents by refusing to speak for hours.
• No one outsulks him when he's disappointed about something.
• She tried to outsulk her friend, but eventually they both laughed.