[f. as prec. + -OR.] One who expostulates; † one who rebukes or complains of.
1727. in Bailey, vol. II.
1795. G. Wakefield, Reply to Part II of Age of Reason, 37. An open and warm expostulater of arrogance.
a. 1834. Lamb, Lett. to Coleridge (L.). He is no opponent; only an expostulator.