disorder

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A lack of order or regular arrangement; confusion.
2. n. A breach of civic order or peace; a public disturbance.
3. n. An ailment that affects the function of mind or body: eating disorders and substance abuse.
4. v. To throw into confusion or disarray.
5. v. To disturb the normal physical or mental health of; derange.

Century Dictionary and Cyclopedia

1. n. Lack of order or regular arrangement; irregularity; indiscriminate distribution; confusion: as, the troops were thrown into disorder; the papers are in disorder.
2. n. Tumult; disturbance of the peace of society; breach of public order or law.
3. n. Neglect of rule; disregard of conventionality.
4. n. Morbid irregularity, disturbance, or interruption of the functions of the animal economy or of the mind; physical or mental derangement; properly, a diseased state of either mind or body that does not wholly disable the faculties; but it is often applied more comprehensively.
5. n. A specific or particular case of disorder; a disease; a derangement, mental or physical: as, gout is a painful disorder.
6. n. Mental perturbation; temporary excitement or discomposure; agitation.
7. n. Synonyms Disarrangement, disorganization, disarray, jumble.
8. n. Commotion, turbulence, riotousness.
9. n. 4 and Illness, ailment, complaint, malady.
10. To destroy or derange the order of; derange; disturb the regular disposition or arrangement of; throw into confusion; disarrange; confuse.
11. To derange the physical or mental health of; bring into a morbid condition of body or mind; indispose.
12. To produce mental disturbance in; unsettle the mind of; perturb; agitate.
13. To derange the natural or regular functions of; throw out of order or balance; unsettle the normal condition of: as, to disorder one's liver; his mind is disordered.
14. To depose from holy orders.
15. n. In logic, disagreement with every conceivable general rule whatever. It is impossible for a finite collection of objects to be in disorder in this sense, nor is it possible for a continuum to be in disorder. Whether or not it is possible for an infinite discrete collection to be in disorder is a question that has not been solved.

Wiktionary

1. n. Absence of order; state of not being arranged in an orderly manner.
2. n. A disturbance of civic peace or of public order.
3. n. medicine A physical or psychical malfunction.

GNU Webster's 1913

1. n. Want of order or regular disposition; lack of arrangement; confusion; disarray.
2. n. Neglect of order or system; irregularity.
3. n. Breach of public order; disturbance of the peace of society; tumult.
4. n. Disturbance of the functions of the animal economy or of the soul; sickness; derangement.
5. v. To disturb the order of; to derange or disarrange; to throw into confusion; to confuse.
6. v. To disturb or interrupt the regular and natural functions of (either body or mind); to produce sickness or indisposition in; to discompose; to derange.
7. v. obsolete To depose from holy orders.

WordNet 3.0

1. v. bring disorder to
2. n. a condition in which things are not in their expected places
3. n. a physical condition in which there is a disturbance of normal functioning
4. n. a disturbance of the peace or of public order
5. v. disturb in mind or make uneasy or cause to be worried or alarmed