If "lunge" means a sudden forward movement:
* Retreat: To move back or away from something.
* Withdraw: To move back or away from a place or situation.
* Step back: To move backward.
* Recedes: To move back or away.
If "lunge" means a sudden attack:
* Defend: To protect oneself against an attack.
* Retreat: To move back or away from an attack.
* Yield: To give way to pressure or force.
* Avoid: To stay away from something.
If "lunge" means a forceful grab:
* Release: To let go of something.
* Withdraw: To take back a statement or action.
* Gentle: To be kind and careful.
* Caress: To touch gently.
Ultimately, the best antonym for "lunge" depends on the specific context in which it is used.