antagonism
antipathy
bad blood
clashing
collision
competing
competition
competitive
conflict
contrariety
contrariness
cross-purposes
cutthroat
cutthroat competition
disaccord
dissension
emulation
emulous
enmity
fractiousness
friction
gamesmanship
hostility
in competition
in rivalry
inimicalness
jockeying
lifemanship
negativeness
noncooperation
obstinacy
one-upmanship
oppugnancy
perverseness
recalcitrance
refractoriness
repugnance
rival
rivaling
rivalry
uncooperativeness
vie
allying
applying
belying
buying
complying
crying
decrying
defying
denying
drying
dyeing
dying
eyeing
flying
frying
implying
indemnifying
lying
misapplying
overflying
overlying
plying
prying
relying
replying
retrying
shying
sighing
spying
supplying
tieing
trying
tying
underlying
undying