tr.v., -ranged, -rang·ing, -rang·es.
- To disturb the order or arrangement of.
- To upset the normal condition or functioning of.
- To disturb mentally; make insane.
[French déranger, from Old French desrengier : des-, de- + reng, line (of Germanic origin).]
derangement de·range'ment n.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
