Definition of "infighter" [infighter]

• A person who indulges in infighting (noun)

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• "Emanuel, who has a reputation as a tough political infighter, is credited with helping Democrats take control of the House in 2006."
• "In Petraeus, Obama is dealing with perhaps the most recognized and acclaimed general of this generation, a skillful bureaucratic infighter who also has an almost unique ability among senior military officers to communicate outside normal channels through the media."
• "A skilled infighter, with sharp elbows and a tart tongue, he is anything but a wallflower."