adjective. Lacking in harmony.

Inharmonious; discordant; incongruous.

adjective. Unharmonious; discordant.

adjective. The opposite of harmonious; lacking harmony.

adjective. lacking in harmony

"American families were more than twice as likely as those living anywhere else to have so-called disharmonious relationships, or those defined by strong negative feelings, such as disagreement and tension, without any strong positive feelings, including feelings of closeness and amicability."

inharmonious  unharmonious  

all-comprehensive  anthemic  anti-federation  buffo  cocksure  

absonant  antagonistic  antipathetic  at cross-purposes  at loggerheads