(a.) Alt. of Diaphonical.

absonant cacophonous cracked diaphonic disconsonant discordant disharmonic disharmonious dissonant flat grating harsh immelodious 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