Etymology
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put-on (n.)

"ruse, deception," 1937, from earlier adjectival meaning "assumed, feigned" (1620s), a figurative extension of the verbal phrase on the notion of putting on costumes or disguises. To put on (v.), of clothes, garments, etc., is by early 15c.; see from put (v.) + on (adv.). Hence "clothe, cover, assume as covering" (mid-15c.) and "assume the garb or appearance of" (real or feigned), 1520s. The expression put (someone) on "play a trick on, deceive" (by 1958) seems to be a back-formation from the noun.

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carry on (v.)

1640s, "continue to advance," also "manage, be engaged in," from carry (v.) + on (adv.). The meaning "conduct oneself in a wild and thoughtless manner" is by 1828. Carryings-on is from 1660s as "questionable doings," from 1866 as "riotous behavior." As an adjective, carry-on, in reference to luggage that may be brought into the passenger compartment of an airliner, is attested by 1965.

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iron-on (adj.)

1959, from the verbal phrase, from iron (v.) + on (adv.).

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turn-on (n.)

that which arouses or excites, 1968, originally of psychedelic drugs, from verbal phrase turn on "activate (a mechanism)" (1833), specifically from figurative sense turn (someone) on "excite, stimulate, arouse," recorded from 1903; from turn (v.) + on (adv.).

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set-up (n.)

1890, "arrangement," from the verbal phrase set up, which is attested from c. 1200 as "place in an erect position, place upright, make ready for use;" from set (v.) + up (adv.). From 19c. also "a favorable arrangement of the balls in billiards, etc., especially when left by one player for the next."

The verbal phrase is from 1520s as "begin business or enterprise." It also can or once could mean "to establish, found" (early 15c.), "make (a hawk) perch upright" (late 15c.), and "put (drinks, etc.) before customers or other patrons as a treat" (1880).

It is attested from 1950 (originally in pugilism) as "to bring (someone) to a vulnerable position, put (someone) in a position to be knocked down." It is attested by 1965 as "to contrive, plot." To set (someone) up "provide (someone) with means" is from 1520s. The adjective set-up "established" is attested by c. 1600.

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get on (v.)

1590s, "to put on," from get (v.) + on (adv.). Meaning "prosper" is from 1785; that of "to advance, make progress" is from 1798; that of "be friendly" (with) is attested by 1816.

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hands-on (adj.)

by 1969, originally in reference to the use of computers in education; see hand (n.) + on (adv.).

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off-and-on (adv.)

"intermittently, occasionally," 1530s; see off (adv.) + on. As an adjective, "occasional," from 1580s.

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go on (v.)

1580s, "advance, proceed," from go (v.) + on (adv.). Meaning "behave, carry on" is from 1777; especially "to talk volubly" (1863). As an expression of derision by 1886.

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side-on (adv.)

1909, "with one side facing," from side (n.) + on (adv.), perhaps based on earlier head-on. In reference to a vehicle collision, by 1828.

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