derange

v. (-ging) 1 make insane. 2 disorder, disturb.  derangement n. [french: related to *rank1]

v. t. To put out of place, order, or rank; to disturb the proper arrangement or order of; to throw into disorder, confusion, or embarrassment; to disorder; to disarrange; as, to derange the plans of a commander, or the affairs of a nation.