Nouns

(n)recoil, kickthe backward jerk of a gun when it is fired
(n)recoil, repercussion, rebound, backlasha movement back from an impact

Verbs

(v)flinch, squinch, funk, cringe, shrink, wince, recoil, quaildraw back, as with fear or pain“she flinched when they showed the slaughtering of the calf”
(v)backfire, backlash, recoilcome back to the originator of an action with an undesired effect“Your comments may backfire and cause you a lot of trouble”, “the political movie backlashed on the Democrats”
(v)bounce, resile, take a hop, spring, bound, rebound, recoil, reverberate, ricochetspring back; spring away from an impact“The rubber ball bounced”, “These particles do not resile but they unite after they collide”
(v)kick back, recoil, kickspring back, as from a forceful thrust“The gun kicked back into my shoulder”