antagonism
antipathy
backfire
backlashing
backwash
boomerang
bounce
bounce back
bound
carom
clashing
clout
collision
conflict
confutation
contradiction
contraposition
contrariety
contrecoup
counteraction
counterposition
counterworking
crankiness
crotchetiness
dissent
force
friction
impact
impress
impression
imprint
interference
kick
kick back
kickback
mark
nonconformity
opposition
opposure
oppugnance
oppugnancy
perverseness
print
reaction
rebound
rebuff
recalcitrance
recalcitration
recoil
reflex
come about
fallout
go on
hap
happen
occur
pass
pass off
take place
ideology