Webster's Revised Unabridged Dictionary · 1913

Expostulate

Expostulate (?; 135) , intransitive verb

[Latin expostulatus, past participle of expostulare to demand vehemently; ex out + postulare to ask, require. See Postulate.]

To reason earnestly with a person on some impropriety of his conduct, representing the wrong he has done or intends, and urging him to make redress or to desist; to remonstrate; -- followed by with.
Men expostulate with erring friends; they bring accusations against enemies who have done them a wrong. — Jowett (Thuc. )

Expostulate , transitive verb

To discuss; to examine. [Obsolete]
To expostulate What majesty should be, what duty is. — Shakespeare