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expostŭlātĭo, ōnis, f. [expostulo], an expostulation, complaint (rare but class.): cum esset expostulatio facta, Cic. Clu. 59, 161: singulorum, Tac. A. 1, 13.
In plur.: fuerunt nonnulli aculei in C. Caesarem, contumeliae in Gellium, expostulationes cum absente Pompeio, Cic. Q. Fr. 2, 1, 1: dum suas quisque nunc querelas nunc expostulationes inserit, Liv. 35, 17, 2.