Wiktionary
n. A person who indulges in infighting
Usage examples of "infighter".
Elen knew herself to be a skilled infighter, especially for someone her size, and that her knowledge of the Elector’s court and the emissaries sent there from the other Fringe Cities, as well as the dangers they represented, could not be faulted.
But Marder is the best corporate infighter in the history of the company.
There are several candidates among the best-known political infighters, but none has yet shown conclusively that he or she possesses the resources or the will to inflict significant damage on the Klingon Homeworld or, more significantly, the First City.
As a result Joktar of the SunSpot was now reckoned one of the deadliest infighters on the streets, though he was no call-out man with a ready challenge.
I stared at my lap to give the family infighters back some of their dignity and saw that Madeleine was gripping her father's knee so hard that her fingers were blue-white.
Because what rises to the top in an empire are the bureaucratic infighters, the assassins, or the warlords.
It focused the political infighters and their lawyers on a single, achievable prize, not a kid and his surrounding issues.