Kilkenny cats, altercation, animosity, antagonism, arguing, argument, bad blood, bicker, bickering, blood feud, brawl, broil, cat-and-dog life, combat, competition, conflict, contention, contentiousness, contest, contestation, controversy, cut and thrust, debate, difference, disagreement, discord, disharmony, disputation, dispute, dissension, donnybrook, donnybrook fair, embroilment, enmity, feud, fight, fighting, fliting, fracas, friction, fuss, hard feelings, hatred, hostility, ill will, imbroglio, litigation, logomachy, open quarrel, paper war, polemic, quarrel, quarreling, quarrelsomeness, rivalry, scrapping, sharp words, slanging match, snarl, spat, squabble, squabbling, struggle, tiff, tussle, unfriendliness, vendetta, war, war of words, warfare, words, wrangle, wrangling