Pronunciation: (ag'u-nīz"), [key]
—v., -nized, -niz•ing.
1. to suffer extreme pain or anguish; be in agony.
2. to put forth great effort of any kind.
to distress with extreme pain; torture. Also, esp. Brit.,ag'o•nise".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.