writhe
/rɪθ/Definitions
1. verb
to twist or turn the body in a convulsive or agonized manner; to move with a twisting or turning motion; to be in a state of intense suffering or anxiety
“The patient writhed in agony as she gave birth to her first child.”
2. noun
a twisting or turning motion; a convulsive or agonized movement of the body
“The doctor observed the patient’s writhing as she recovered from the surgery.”