Webster's Revised Unabridged Dictionary · 1913

Derange

Derange , transitive verb

[French déranger; pref. dé- = dés- (Latin dis) + ranger to range. See Range, and compare Disarrange, Disrank.]

1.
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.
2.
To disturb in action or function, as a part or organ, or the whole of a machine or organism.
A sudden fall deranges some of our internal parts. — Blair
3.
To disturb in the orderly or normal action of the intellect; to render insane.