discordant
inharmonious
unharmonious
absonant
antagonistic
antipathetic
assorted
at cross-purposes
at loggerheads
at odds
at variance
at war
atonal
cacophonic
cacophonous
clashing
conflicting
contradictory
contrary
contrasted
contrasting
cracked
cranky
cross
departing
deviating
deviative
diaphonic
different
differentiated
differing
disaccordant
disagreeable
disagreeing
disconsonant
discrepant
discrete
discriminated
disharmonic
disharmonious
disjoined
disparate
disproportionate
dissident
dissimilar
distinct
distinguished
divergent
diverging
divers
Third Order
blood-chilling
dulcet
ear-splitting
four-part
harmonic
melodic
melodious
percussive
plaintive
raucous
resonant
rhythmic
sibilant
tinny
unmelodious
unmusical