absonant atonal cacophonous conflicting cracked diaphonic discordant discrepant disharmonic disharmonious dissonant flat grating harsh immelodious incompatible incongruent incongruous inconsistent inharmonic inharmonious musicless nonmelodious off off-key off-tone out of pitch out of tone out of tune raucous sharp shrill sour strident tuneless unharmonious unmelodious unmusical untunable untuned untuneful