disconsonant

synonyms

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