Expostulate is defined as to try to reason with someone while showing a lot of disagreement.(verb)
An example of expostulate is to try to prove the existence of God to an atheist.
See expostulate in Webster's New World College Dictionary
See expostulate in American Heritage Dictionary 4
intransitive verb ex·pos·tu·lat·ed, ex·pos·tu·lat·ing, ex·pos·tu·lates
Origin: Latin expostulāre, expostulāt-
Origin: : ex-, intensive pref.; see ex-
Origin: + postulāre, to demand; see prek- in Indo-European roots.
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