Lack of harmony is a term that describes a situation in which two or more elements are not in agreement. This can be seen in the crossword solutions DISCORDANCE (11 letters), DISCORD (7 letters) and CLASH (5 letters). All three words refer to a lack of harmony, with DISCORDANCE being the most extreme form of disagreement. DISCORD and CLASH are less intense forms of disagreement, but still indicate a lack of harmony between two or more elements.