Kilkenny cats
aggressive
altercation
apologetics
apologia
apology
argument
argumentation
bellicose
belligerent
bicker
bickering
casuistry
cat-and-dog life
combat
combative
conflict
contention
contentiousness
contest
contestation
controversy
cut and thrust
debate
defense
disputation
disputatious
dispute
divisive
enmity
eristic
factional
factious
fighting
flyting
hassle
hostility
hubbub
irascible
irritable
litigation
litigious
logomachy
paper war
partisan
passage of arms
polarizing
polemic
polemics
pugnacious
bargaining
angling
dangling
mangling
strangling
tangling