- disordered; disarranged.
verb (used with object), de·ranged, de·rang·ing.
- to throw into disorder; disarrange.
- to disturb the condition, action, or function of.
- to make insane.
- to disturb the order or arrangement of; throw into disorder; disarrange
- to disturb the action or operation of
- to make insane; drive mad
c.1790, “insane;” of things, “out of order,” from 1796; past participle adjective from derange (v.).
1776, “throw into confusion,” from French déranger, from Old French desrengier “disarrange, throw into disorder,” from des- “do the opposite of” (see dis-) + Old French rengier (Modern French ranger) “to put into line,” from reng “line, row,” from a Germanic source (see rank (n.)). Mental sense first recorded c.1790.