Inharmonious (adjective)
Not in harmony; discordant
Inharmonious (adjective)
Lacking accord or agreement
Unharmonious (adjective)
alternative form of inharmonious
Wiktionary
Inharmonious (adjective)
not forming or contributing to a pleasing whole; discordant
“an inharmonious, negative state of mind”
Unharmonious (adjective)
not harmonious
“the unharmonious noise of town life”
Oxford Dictionary