discord
1. dis.cord \'dis-.ko.(*)rd\ n : lack of agreement or harmony : : DISUNITY, DISSENSION : CONFLICT : OPPOSITION, CONTRAST : a combination of musical sounds which strike the ear harshly : DISSONANCE : any harsh or unpleasant sound MVARIANCE: DISCORD implies an intrinsic or essential lack of harmony producing quarreling, factiousness, or antagonism; STRIFE emphasizes a struggle for superiority rather than the incongruity or incompatibility of the persons or things involved: CONFLICT usu. stresses the action of forces in opposition but in static applications implies an irreconcilability as of duties or desires; CONTENTION applies to strife or competition that shows itself in quarreling, disputing, or controversy; DISSENSION implies strife or discord and stresses a division into factions; VARIANCE implies a clash between persons or things owing to a difference in nature, opinion, or interest SYN syn STRIFE, CONFLICT, CONTENTION, DISSENSION, 2. dis.cord \'dis-.ko.(*)rd, dis-'ko.(*)rd\ vi [ME discorden, fr. OF discorder, fr. L discordare, fr. dis]cord-, discors discordant, fr. dis- + cord-, cor heart - more at HEART : DISAGREE, CLASH
Webster's English Dictionary