Verb
uncramp (third-person singular simple present uncramps, present participle uncramping, simple past and past participle uncramped)
(transitive, intransitive) To recover, or cause to recover, from cramp or from being cramped or confined.
I waited for my thighs and butt to uncramp. Of course, they didn't know the loosening rule. They were screaming things like *Are you crazy? Do you know we're thirty-five years old? Sit down and feed us a Twinkie! P. C. Cast