Definition of "gloater" [gloater]

• One who gloats. (noun)

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• "He wasn't a gloater, but when he had passed a bill he was proud of, he'd flash an impish grin, as if he were bursting to tell someone about his triumph."
• "Luthor was always a gloater, and when he laughs his head goes back."
• "Captain Quinnox glided into the room behind the Prince and gently closed the door, unnoticed by the gloater."