cramp up

English

Verb

cramp up (third-person singular simple present cramps up, present participle cramping up, simple past and past participle cramped up)

1. (intransitive) To become affected with muscle cramps.
   • 2004, Intelligent Systems, translated by Nintendo of America, Paper Mario: The Thousand-Year Door, Nintendo, GameCube, level/area: Hooktail Castle:

     I was wondering if you could let me out of this chest. I've been locked in here so long, I'm starting to cramp up like you wouldn't believe.