ex•as•per•ate
Pronunciation: (v.ig-zas'pu-rāt"adj.ig-zas'pur-it), [key] — v., adj. -at•ed, -at•ing,
—v.t. - to irritate or provoke to a high degree; annoy extremely: He was exasperated by the senseless delays.
- to increase the intensity or violence of (disease, pain, feelings, etc.).
—adj. - rough; covered with hard, projecting points, as a leaf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.