Discordia
Eris
Kilkenny cats
abhorrence
abomination
alienation
allergy
altercation
animosity
animus
antagonism
antipathy
argument
aversion
bad blood
bickering
bitterness
cat-and-dog life
clash
clashing
cold sweat
collision
combat
competition
conflict
contention
contentiousness
contest
contestation
contrariety
contrariness
controversy
creeping flesh
cross-purposes
cut and thrust
daggers
dead set
debate
detestation
disaccord
disaffection
disaffinity
discord
discordance
discordancy
discontent
feud
hate
hatred
hostility
malice
mistrust
misunderstanding
persecution
prejudice
repugnance
rivalry
treachery
uneasiness
amity
love