backlash (n.)
- antagonism
- antipathy
- backfire
- backwash
- boomerang
- bounce
- bound
- carom
- clout
- collision
- conflict
- confutation
- contradiction
- contrariety
- counteraction
- crankiness
- crotchetiness
- dissent
- force
- friction
- impact
- impress
- impression
- imprint
- interference
- kick
- kickback
- mark
- nonconformity
- opposition
- perverseness
- reaction
- rebound
- rebuff
- recalcitrance
- recoil
- reflex
- repercussion
- repugnance
- repulse
- resilience
- resistance
- response
- revolt
- ricochet
- spring