Etymology
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indiscipline (n.)
"disorder, lack of discipline," 1783, from in- (1) "not, opposite of" + discipline (n.). Perhaps modeled on French indiscipline (18c.). Indisciplined as a past-participle adjective is attested from c. 1400.
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-pathy 

word-forming element meaning "feeling, suffering, emotion; disorder, disease," from Latin -pathia, from Greek -patheia "act of suffering, feeling" (from PIE root *kwent(h)- "to suffer"). Meaning "system of treatment of disease, method, cure, curative treatment" is abstracted from homeopathy (q.v.).

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confusion (n.)

c. 1300, confusioun, "overthrow, ruin," from Old French confusion "disorder, confusion, shame" (11c.) and directly from Latin confusionem (nominative confusio) "a mingling, mixing, blending; confusion, disorder," noun of action from past-participle stem of confundere "to pour together," also "to confuse" (see confound).

Meaning "act of mingling together two or more things or notions properly separate" is from mid-14c. Sense of "a putting to shame, perturbation of the mind" (a sort of mental "overthrow") is from c. 1400 in English, while that of "mental perplexity, state of having indistinct ideas" is from 1590s. Meaning "state of being mixed together," literally or figuratively, "a disorderly mingling" is from late 14c.

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micrography (n.)

1650s, "description of microscopic objects;" see micro- + -graphy. Related: Micrograph; micrographic; micrographist. From 1899 as "art of writing in very small letters." Also "abnormally small handwriting as a symptom of a nervous disorder."

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porphyria (n.)

metabolic disorder, 1923, from porphyrin (1910), the name of the type of chemical which, in imbalance, causes it, from German porphyrin (1909), chemical name, from Greek porphyros "purple" (see purple) + -in (2). Some of the compounds are purple.

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disarray (v.)

late 14c., "break up military formation;" early 15c. in general sense "throw out of arrangement or into disorder;" see dis- "reverse of" + array (v.) "put in order, arrange." Perhaps formed on the analogy of Old French desareer. Related: Disarrayed.

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perturbation (n.)

late 14c., perturbacioun, "mental disturbance, state of being perturbed," from Old French perturbacion "disturbance, confusion" (14c.) and directly from Latin perturbationem (nominative perturbatio) "confusion, disorder, disturbance," noun of action from past participle stem of perturbare (see perturb).

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bulimia (n.)
"emotional disorder consisting of food-gorging alternating with purging or fasting, accompanied by morbid concern with body weight and shape," 1976, Modern Latin, from Greek boulimia, "ravenous hunger" as a disease, literally "ox-hunger," from bou-, intensive prefix (originally from bous "ox;" from PIE root *gwou- "ox, bull, cow") + limos "hunger," from PIE *leie- "to waste away."

As a psychological disorder, technically bulemia nervosa. Englished form boulimy, bulimy was used from late 14c. in a medical sense of "morbidly ravishing hunger, disease causing the patient to have an insatiable hunger for food."
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snafu (n.)
1941, U.S. military slang, acronym for situation normal, all fucked up, "an expression conveying the common soldier's laconic acceptance of the disorder of war and the ineptitude of his superiors" ["Oxford English Dictionary"]. As an adjective from 1942. In public explanations the word typically was euphemised to fouled.
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osteopathy (n.)

1857, "disease of the bones," from Greek osteon "bone" (from PIE root *ost- "bone") + -pathy "disorder, disease," from Greek -patheia, combining form of pathos "suffering, disease, feeling" (from PIE root *kwent(h)- "to suffer"). As a system of treating ailments by the manipulation of bones, it dates from 1889.

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