Discord

Proverbs regarding aggression, at enmity, at variance with, belligerent, cantankerous, combative, competitive, contentious, disagreeing, discordant, destranged, hostile, mismatched, not on speaking terms, on bad terms, out of character, out of its element, out of joint, out of keeping, out of place, out of proportion, out of season, out of time, palestric, palestrical, pugilistic, pugnacious, quarrelsome, unaccommodating, unfriendly, unharmonious, unsuited, up in arms against

(See also Conflict)