noun: One who remonstrates, or issues (usually formal and written) protestations.
adjective: Inclined or tending to remonstrate; expostulatory; urging reasons in opposition to something.
noun: (Protestantism, historical) A member of the Dutch Arminians whose divergence from Calvinism was expressed in five articles in the Remonstrance of 1610; subsequently a member of the liberal Protestant denomination that developed from this group.
