excruciation excruciation /ɪksˌkruːʃiˈeɪʃən/

noun

1. The infliction of extremely painful punishment or suffering  ( crucifixion , excruciation )
   the infliction of extremely painful punishment or suffering
   
2. A state of acute pain  ( excruciation , agony , suffering )
   a state of acute pain
     The athlete's screams echoed in the stadium as he writhed in agony.
   The athlete's screams echoed in the stadium as he writhed in agony.