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moustache: moustache: [16] Moustache comes via French from Italian mostaccio, which goes back ultimately to Greek mústax ‘upper lip, moustache’. The synonymous mustachio [16] appears to have originated as a blend of mostaccio with the related Spanish mostacho.
attache (n.): 1835, from French attaché "junior officer attached to the staff of an ambassador, etc.," literally "attached," past participle of attacher "to attach" (see attach). Attache case "small leather case for carrying papers" first recorded 1900.
attached (adj.): "affectionate, devoted, fond," 1793, past participle adjective from attach.
moustache (n.): see mustache. Related: moustachial.
mustache (n.): 1580s, from French moustache (15c.), from Italian mostaccio, from Medieval Greek moustakion, diminutive of Doric mystax (genitive mystakos) "upper lip, mustache," related to mastax "jaws, mouth," literally "that with which one chews," from PIE root *mendh- "to chew" (see mandible).

Borrowed earlier (1550s) as mostacchi, from the Italian word or its Spanish derivative mostacho. The plural form of this, mustachios, lingers in English. Slang shortening stache attested from 1985. Dutch slang has a useful noun, de befborstel, to refer to the mustache specifically as a tool for stimulating the clitoris; probably from beffen "to stimulate the clitoris with the tongue."
semi-detached (adj.): in reference to houses, 1845, from semi- + past participle of detach (v.).
The "Detached House" bears its peculiar characteristic on its front; it stands alone, and nothing more can be said about it; but with the "semi-detached house" there is a subtle mystery, much to be marvelled at. Semi-detached! Have the party-walls between two houses shrunk, or is there a bridge connecting the two, as in Mr. Beckford's house in Landsdown Crescent, Bath? A semi-detached house may be a house with a field on one side and a bone-boiling factory on the other. Semi-detached may mean half-tumbling to pieces. I must inquire into it. ["Houses to Let," in "Household Words," March 20, 1852]
unattached (adj.): late 15c., "not arrested or seized," from un- (1) "not" + past participle of attach (v.). Meaning "not associated with any body or institution" is recorded from 1796; sense of "single, not engaged or married" is first attested 1874.
metachemistry: "The chemistry of things which are supersensible", Mid 19th cent.; earliest use found in Ralph Waldo Emerson (1803–1882), lecturer and author. From meta- + chemistry.