—n.
1 a lack of order; confusion.
2 a riot; a commotion.
3 Med. a usu. minor ailment or disease.
—v.tr.
1 throw into confusion; disarrange.
2 Med. put out of good health; upset.
Etymology: ME, alt. after ORDER v. of earlier disordain f. OF desordener (as DIS-, ORDAIN)
Useful english dictionary. 2012.