In-fighting :  n 1: conflict between members of the same organization (usually concealed from outsiders) 2: boxing at close quarters

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,