Definitions

1. verb

to lose one’s tightness or stiffness, especially of the face or skin; to relax

“After laughing, she began to unpucker.”

2. verb

to cause something to lose its tightness or stiffness

“The warm sunshine will help to unpucker the dry soil.”

3. noun

the act of losing one’s tightness or stiffness

“The unpucker of her face was a sign of her relief.”