Postulate suggest or assume the existence, fact, or truth of (something) as a basis for reasoning, discussion, or belief.Protest : a statement or action expressing disapproval of or objection to something.Explain : make (an idea or situation) clear to someone by describing it in more detail or revealing relevant facts.Disclose : make (secret or new information) known.Expostulate : express strong disapproval or disagreement.Synonym of Expostulate is Protest