Is a bad winner

• Rubs it in
• Dances in the end zone, maybe
• Rejoices, in a smug way
• What a poor winner does
• Rejoices, in an in-your-face manner
• Crows, maybe
• Shows evil satisfaction
• What a bad winner does
• Rejoices tactlessly

Wiktionary Word definitions in Wiktionary
n. (plural of gloat English) vb. (en-third-person singular of: gloat)