lack of concord or harmony between persons or things

marital discord.

disagreement; difference of opinion.

strife; dispute; war.

Music . an inharmonious combination of musical tones sounded together.

any confused or harsh noise; dissonance.

to disagree; be at variance.

noun

harmoniousness , harmony , agreement , consonanc

noun

cacophony , clamor , clinker , din , disharmony , dissonance , harshness , jangle , jarring , racket , sour note , tumult , clash , confrontation , contention , difference , difficulty , disaccord , discordance , dissension , dissent , dissentience , dissidence , faction , friction , inharmony , schism , strife , variance , war , warfare , anger , animosity , antagonism , atony , conflict , differ , disagreement , disruption , enmity , hostility , incongruity , noise , scission , static

verb

clash , contradict , disaccord , jar , disagree , dissent , vary