also wipe-out, 1962, American English, surfer slang, from wipe (v.) + out. Sense of "destruction, defeat, a killing" is recorded from 1968. Verbal phrase wipe out "destroy, obliterate" is from 1610s.

also look-out, "person who stands watch or acts as a scout," 1690s, from verbal phrase look out "be on the watch" (c. 1600), from look (v.) + out (adv.).

"act of obliterating or effacing, a blotting out or wearing out, fact of being obliterated, extinction," 1650s, from Late Latin obliterationem (nominative obliteratio), noun of action from past-participle stem of obliterare "cause to disappear, blot out (a writing)," figuratively "cause to be forgotten, blot out a remembrance" (see obliterate).

"to put out, quench, stifle," 1540s, from Latin extinguere/exstinguere "quench, put out (what is burning); wipe out, obliterate," from ex "out" (see ex-) + stinguere "quench," apparently an evolved sense from PIE *steig- "to prick, stick, pierce" (see stick (v.)). But see distinguish (v.). Related: Extinguished; extinguishing.

"to hollow out, make hollow by digging or scooping, or by removing extraneous matter," 1590s, from Latin excavatus, past participle of excavare "to hollow out," from ex "out" (see ex-) + cavare "to hollow, hollow out," from cavus "cave" (from PIE root *keue- "to swell," also "vault, hole"). Related: Excavated; excavating.

1570s (adj.), "draining out;" 1610s (n.), in anatomy, "an emulgent vessel," from Latin emulgentem (nominative emulgens), present participle of emulgere "to milk out, drain out, exhaust," from assimilated form of ex "out" (see ex-) + mulgere "to milk" (from PIE root *melg- "to rub off; to milk"). Related: Emulgence.

also out-maneuver, "surpass in maneuvering," 1799, from out- + maneuver (v.). Related: Outmaneuvered; outmaneuvering.

1530s, "to overthrow, subvert," from Latin evertere "turn out, turn over, overthrow," from assimilated form of ex "out, out of" (see ex-) + vertere "to turn" (from PIE root *wer- (2) "to turn, bend"). By 1804 as "turn outward or inside out." Related: Everted; everting; eversive.

mid-15c., "projecting, jutting out, standing out beyond the line or surface of something," from Latin prominentem (nominative prominens) "prominent," present participle of prominere "jut or stand out, be prominent, overhang," from pro "before, forward" (see pro-) + -minere "project, jut out," which is related to mons "hill" (from PIE root *men- (2) "to project").

Of features, "conspicuous, standing out so as to strike the mind or eye," from 1759; of persons, "notable, leading, eminent, standing out from among the multitude," from 1849. Related: Prominently.

word-forming element meaning "surgical removal," from Latinized form of Greek -ektomia "a cutting out of," from ektemnein "to cut out," from ek "out" (see ex-) + temnein "to cut" (from PIE root *tem- "to cut").