Etymology
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option (n.)

c. 1600, "action of choosing;" 1630s, "power or liberty of choosing," from French option (Old French opcion), from Latin optionem (nominative optio) "choice, free choice, liberty to choose," from optare "to desire, pray for, choose," which is of uncertain origin. De Vaan derives it from Proto-Italic *opeje- "to choose, grab," from PIE *hopeie- "to choose, grab," and compares Hittite epp/app- "to take, grab," Sanskrit apa, Avestan apa "has reached."

The meaning "thing that may be chosen" is attested from 1885. The commercial transaction sense of "privilege secured by payment of a premium (on a stock or a certain produce at a specified time and at a specified price)" is recorded from 1755 (the verb in this sense is attested by 1880 in American English). As a North American football play in which the back may either pass the ball or run with it, it is recorded by 1953.

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put-put 

indicating the sound of a muffled internal combustion engine, 1904, imitative. Applied to various engines or objects which make such a sound.

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put (n.)

c. 1300, "act of throwing a stone or other heavy weight overhand as a test of strength," from put (v.). General meaning "act of putting" is from early 15c. Also compare putt (n.).

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put (v.)

Middle English putten, from late Old English *putian, "to thrust, push, shove" (someone or something; a sense now obsolete), also "to move or a thing physically so as to place it in some situation," implied in putung "instigation, an urging," literally "a putting;" related to pytan "put out, thrust out" (of eyes), probably from a Germanic stem that also produced Danish putte "to put," Swedish dialectal putta; Middle Dutch pote "scion, plant," Dutch poten "to plant," Old Norse pota "to poke."

Obsolete past tense form putted is attested 14c.-15c. From c. 1300 as "to hurl, cast, propel," especially "to throw with an upward and forward motion of the arm" (Will. Putstan is attested as a name from 1296). From mid-14c. in the figurative sense of "bring (someone) into some specified state or condition;" late 14c. as "subject (someone to something)," as in put to death, c. 1400; put to shame, mid-15c. From mid-14c. as "make a declaration, express in speech or writing," hence "express or state (in a particular way)," 1690s, also "propose or place before someone for consideration."

To put (something) back is from 1530s as "to hinder, delay;" 1816 as "restore to the original place or position." To put (something) down "end by force or authority" (a rebellion, etc.) is from mid-14c. To put upon (someone) "play a trick on, impose on" is from 1690s. To put up with "tolerate, accept, bear or suffer without protest or resentment" (1755) is perhaps from put up "to take up" (one's lodgings, etc.), 1727. To put (someone) up in the transitive sense of "lodge and entertain" is by 1766. To put (someone) on "deceive" is from 1958. To put upon (someone) "play a trick on, deceive, impose on" is from 1690s.

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put-out (adj.)

"offended, angry, upset," by 1887, from the verbal phrase in the sense of "offend," attested by 1822; see put (v.) + out (adv.). Perhaps via the earlier sense of "cause to lose self-possession, disconcert" (1580s). The verbal phrase is from mid-14c. as "drive out, banish, exile;" from 1520s as "extinguish" (a fire or burning object). To put out, of a woman, "to offer oneself for sex" is attested by 1947.

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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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put-down (n.)

"insult, snub," 1962, from verbal phrase put down "to snub," attested from c. 1400 in this sense, earlier (c. 1300) "to lower, let down," also (mid-14c.) "to throw down, reject;" see put (v.) + down (adv.). To put (something) down "end by force or authority" (a rebellion, etc.) is from mid-14c.  Compare set-down "a rebuff, a scolding" (1780).

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optional (adj.)

"depending on preference," hence "that may be done or not done according to one's choice," 1765, from option + -al (1).

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cooptation (n.)

also co-optation, 1530s, "choice, selection, mutual choice, election to fill a vacancy" on a committee, board, or society, from Latin cooptationem (nominative cooptatio) "election," noun of action from past-participle stem of cooptare "to elect, to choose as a colleague or member of one's tribe," from assimilated form of com "with, together" (see com-) + optare "choose" (see option (n.)). Related: Cooptative.

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opt (v.)

"wish for, choose, desire," 1877, from French opter "to choose" (16c.), from Latin optare "choose, desire" (see option). For the first few years only in English in a French context. An earlier word for the same thing was optate (1610s), from Latin optatus. To opt out "choose not to participate" is by 1922. Related: Opted; opting.

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