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
If you expostulate, you express strong disagreement with someone. `For heaven's sake!' Dot expostulated. `They're cheap and they're useful.' For a moment I thought she was going to expostulate His family expostulated with him. = remonstrate. to express strong disapproval, disagreement, or annoyance with someone (past participle of expostulare, from postulare )