Infighting

Noun

 * 1) Fighting or quarreling among the members of a single group or side.

Thesaurus
Chinese boxing, aggressiveness, bellicosity, belligerence, bickering, bout, boxing, boxing match, close fighting, combativeness, contentiousness, dissension, dissent, dissidence, faction, factiousness, fighting, fisticuffs, flak, irascibility, irritability, litigiousness, partisan spirit, partisanship, prizefight, prizefighting, pugilism, pugnacity, quarrelsomeness, savate, shadowboxing, shrewishness, spar, the clinches, the fights, the ring