Other words that could be used depending on the context include:
* Wince (to draw back in pain or disgust)
* Shudder (to tremble convulsively, often from fear or cold)
* Cower (to crouch down in fear)
* Retreat (to withdraw from a position)
* Flinch (to make a sudden, involuntary movement, especially of the body, as in pain or fear)