Etymology
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stand-up (adj.)
1811, "courageous," originally of fist fights, denoting a manful contest without fake falls, from the verbal phrase (early 12c. in sense "rise to one's feet"), from stand (v.) + up (adv.). To stand up "hold oneself against an opponent" is from c. 1600; as stand up to in the same sense from 1620s. To stand up for "defend the cause of" is from c. 1600. To stand (someone) up "fail to keep an appointment" is attested from 1902. Stand-up comic first attested 1966. Catch-phrase will the real _______ please stand up? is from the popular CBS game show "To Tell the Truth," which debuted in 1956.
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stand (n.)
Old English stand "a pause, delay, state of rest or inaction," from the root of stand (v.). Compare Dutch and German stand (n.). Sense of "action of standing or coming to a position" is attested from late 14c., especially in reference to fighting (1590s). Sense of "state of being unable to proceed" is from 1590s.

Meaning "place of standing, position" is from early 14c.; figurative sense is from 1590s. Meaning "raised platform for a hunter or sportsman" is attested from c. 1400. Meaning "raised platform for spectators at an open-air event" is from 1610s; meaning "piece of furniture on which something is to be set" is from 1690s. Sense of "stall or booth" is first recorded c. 1500. Military meaning "complete set" (of arms, colors, etc.) is from 1721, often a collective singular. Sense of "standing growth" (usually of of trees) is 1868, American English. Theatrical sense of "each stop made on a performance tour" is from 1896. The word formerly also was slang for "an erection" (1867).
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stand (v.)

Old English standan "occupy a place; stand firm; congeal; stay, continue, abide; be valid, be, exist, take place; oppose, resist attack; stand up, be on one's feet; consist, amount to" (class VI strong verb; past tense stod, past participle standen), from Proto-Germanic *standanan (source also of Old Norse standa, Old Saxon and Gothic standan, Old High German stantan, parallel with simpler forms, such as Swedish stå, Dutch staan, German stehen [see discussion in OED]), from *stathula, from PIE root *sta- "to stand, make or be firm."

Sense of "to exist, be present" is attested from c. 1300. Meaning "encounter without flinching" is from 1590s; weaker sense of "put up with" is from 1620s. Meaning "to submit" (to chances, etc.) is from c. 1700. Meaning "to pay for as a treat" is from 1821. Meaning "become a candidate for office" is from 1550s. Nautical sense of "hold a course at sea" is from 1620s. Meaning "to be so high when standing" is from 1831.

Stand back "keep (one's) distance" is from c. 1400. Phrase stand pat is from poker (1882), earlier simply stand (1824 in other card games). To stand down is from 1680s, originally of witnesses in court; in the military sense of "come off duty" it is first recorded 1916. To let (something) stand is from c. 1200. To stand for is c. 1300 as "count for;" early 14c. as "be considered in lieu of;" late 14c. as "represent by way of sign;" sense of "tolerate" first recorded 1620s. Phrase stands to reason (1620) is from earlier stands (is constant) with reason.

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up (n.)
"that which is up," 1530s, from up (adv.). Phrase on the up-(and-up) "honest, straightforward" first attested 1863, American English.
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up (adv.)

Old English up, uppe, from Proto-Germanic *upp- "up" (source also of Old Frisian, Old Saxon up "up, upward," Old Norse upp; Danish, Dutch op; Old High German uf, German auf "up"; Gothic iup "up, upward," uf "on, upon, under;" Old High German oba, German ob "over, above, on, upon"), from PIE root *upo "under," also "up from under," hence also "over."

As a preposition, "to a higher place" from c. 1500; also "along, through" (1510s), "toward" (1590s). Often used elliptically for go up, come up, rise up, etc. Up the river "in jail" first recorded 1891, originally in reference to Sing Sing, which is up the Hudson from New York City. To drive someone up the wall (1951) is from the notion of the behavior of lunatics or caged animals. Insulting retort up yours (scil. ass) is attested by late 19c.

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up- 
prefix with various senses, from Old English up (adv.), corresponding to similar prefixes in other Germanic languages.
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stand-out (n.)
also standout, "one who is eminent," 1928; as an adjective in this sense from 1932; from verbal phrase, from stand (v.) + out (adv.). Earlier it was used in a sense "labor strike" (1898). To stand out is from 1530s as "to project or seem to project," 1826 in the figurative sense "be prominent."
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up (v.)

1550s, "to drive and catch (swans)," from up (adv.). Intransitive meaning "get up, rise to one's feet" (as in up and leave) is recorded from 1640s. Sense of "to move upward" is recorded from 1737. Meaning "increase" (as in up the price of oil) is attested from 1915. Compare Old English verb uppian "to rise up, swell." Related: Upped; upping. Upping block, used for mounting or dismounting horses, carriages, etc., is attested from 1796 (earlier was horsing-block, 1660s).

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up (adj.)
c. 1300, "dwelling inland or upland," from up (adv.). Meaning "going up" is from 1784. From 1815 as "excited, exhilarated, happy," hence "enthusiastic, optimistic." Up-and-coming "promising" is from 1848. Musical up-tempo (adj.) is recorded from 1948.
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