I got up from my web seat after an hour to uncrease the marks in my back and buttocks.
Source: wiktionary
Uncrease
Synonyms for "uncrease"
Ranked by relevance and common usage.
Sample sentences
2 total sentences available.
He jabbed at the crease I'd made through the center of the Great Leader's face and did his best to uncrease it, while scolding at me in Korean as if I were a horrid barbarian imperialist.
Source: wiktionary