antagonism
antipathy
averseness
aversion
backlash
backwardness
bad blood
challenge
clashing
collision
combative reaction
competition
complaint
conflict
confutation
contempt
contradiction
contraposition
contrariety
contrariness
contumaciousness
contumacy
counteraction
counterposition
counterworking
crankiness
cross-purposes
crotchetiness
cursoriness
defiance
defiance of authority
demur
despite
deviation
disaccord
disaccordance
disagreement
disconformity
disinclination
disobedience
dispute
disrelish
dissension
dissent
dissentience
distaste
enmity
foot-dragging
fractiousness
friction
intractability
intractableness
anecdotage
civilizer
forlornest
quickener
thenceforward