1. to sulk longer or more persistently than someone else; to exceed in sulking
Usage: informal; transitive or intransitive

Examples

• She outsulked her brother after their argument, refusing to speak for hours.
• He tried to outsulk everyone at the party by sitting alone in the corner.
• The two friends outsulked each other until neither could remember what started the fight.
• No matter how upset I was, my sister could always outsulk me.
• They outsulked their way through the entire dinner without saying a word to each other.