recoil
Pronunciation: /rɪˈkɔɪl/
verb
- 1suddenly spring or flinch back in fear, horror, or disgust: he recoiled in horror
- feel fear, horror, or disgust at the thought of something: Ronni felt herself recoil at the very thought
- 2rebound or spring back through force of impact or elasticity: the muscle has the ability to recoil
- (of a gun) move abruptly backwards as a reaction on firing a bullet, shell, or other missile: the rifle recoiled
- (recoil on/upon) (of an action) have an adverse reactive effect on (the originator): if man upsets his planetary ecosystem it will automatically recoil upon him
noun
Pronunciation: /also ˈriːkɔɪl/

Origin:
Middle English (denoting the act of retreating): from Old French reculer 'move back', based on Latin culus 'buttocks'