disorder

Etymology

From dis- + order. Middle English disordeine, from Old French desordainer, from Medieval Latin disordinare.

noun

1. Absence of order; state of not being arranged in an orderly manner.
   After playing the children left the room in disorder.
   It was a household in permanent and benevolent disorder, pervaded by the gentle thrill of religious persecution. 1986, John le Carré, A Perfect Spy
2. A disturbance of civic peace or of public order.
   The class was thrown into disorder when the teacher left the room
   The army tried to prevent disorder when claims the elections had been rigged grew stronger.
3. (medicine, countable) A physical or mental malfunction.
   Bulimia is an eating disorder.

verb

1. (transitive) To throw into a state of disorder.
2. (transitive) To knock out of order or sequence.