Dictionary
ex•ert
Pronunciation: (ig-zûrt'), [key]—
v.t.
1. to put forth or into use, as power; exercise, as ability or influence; put into vigorous action:
to exert every effort.
2. to put (oneself) into strenuous, vigorous action or effort.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.