cacophonic
cacophonous
ajar
altercation
antagonistic
antipathetic
at cross-purposes
at loggerheads
at odds
at variance
at war
clashing
conflicting
confused
contradictory
contrary
cranky
cross
differing
disaccordant
disagreeable
disagreeing
discordant
discrepant
disharmonious
disproportionate
dissident
dissonant
divergent
grating
grinding
harsh
hostile
immiscible
inaccordant
incompatible
inharmonious
jangly
jarring
jostling
negative
out of accord
out of whack
rasping
raspy
repugnant
scraping
scrapy
scratching
scratchy
uncongenial
unharmonious