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.
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).
"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."
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.
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.
"scene of riotous disorder, heated argument," 1852, from Donnybrook Fair, which dated to c. 1200 but which by late 18c, had become proverbial for carousing and brawling, held in County Dublin until 1855. The place name is Irish Domhnach Broc "Church of Saint Broc."
1550s, "to collect in heaps, crowd together in disorder," variant of clotern "to form clots, to heap on" (c. 1400); related to clot (n.), and perhaps influenced by cluster. Sense of "to litter, to crowd (a place) by a disorderly mass of things" is first recorded 1660s. Related: Cluttered; cluttering.