v. ex·pos·tu·lat·ed, ex·pos·tu·lat·ing, ex·pos·tu·lates
To reason earnestly with someone in an effort to dissuade or correct; remonstrate. See Synonyms at object.
To say in protest; object: "[He] expostulated that they had every right to hold a street meeting" (Pierre Berton).
[Latin expostulāre, expostulāt- : ex-, intensive pref.; see EX- + postulāre, to demand; see prek- in the Appendix of Indo-European roots.]
ex·postu·la·to′ry (-lə-tôr′ē), ex·postu·la′tive adj.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.