Dictionary
ex•pos•tu•late
Pronunciation: (ik-spos'chu-lāt"), [key]—
v.i., -lat•ed, -lat•ing.
to reason earnestly with someone against something that person intends to do or has done; remonstrate:
His father expostulated with him about the evils of gambling. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.