Etymology
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chin-up (n.)

also chinup, type of exercise, 1940, from chin (v.) + up (adv.). Earlier it was called chinning the bar and under names such as this is described by 1883.

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toss-up (n.)
"even matter," 1809, from earlier sense of "a flipping of a coin to arrive at a decision" (c. 1700), from verbal phrase, from toss (v.) + up (adv.).
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grown-up (adj.)
"mature," late 14c., past-participle adjective from grow up. The noun meaning "adult person" is from 1813, short for grown-up person, etc.
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dial-up (adj.)

1961 in reference to a data transmission link via public telephone network, from the verbal phrase; see dial (v.) + up (adv.).

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work-up (n.)

"diagnostic examination of a patient," 1961, from the verbal phrase; see work (v.) + up (adv.).

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sit-up (n.)
also situp, kind of physical exercise, 1955, from the verbal phrase (attested from early 13c.); see sit (v.) + up (adv.). Related: Sit-ups.
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dust-up (n.)

also dustup, "fight, quarrel, disturbance," 1897, from dust + up; perhaps from dust "confusion, disturbance" (1590s), also compare kick up a dust "cause an uproar" (1753). To dust (someone's) coat was ironical for "to beat (someone) soundly" (1680s).

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get-up (n.)
also getup, 1847, "equipment, costume," from get (v.) + up (adv.). Meaning "initiative, energy" recorded from 1841. The verbal phrase is recorded from mid-14c. as "to rise."
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lace-up (adj.)
1831, originally of boots, from the verbal phrase, from lace (v.) + up (adv.).
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lead-up (n.)
1917, from verbal phrase; see lead (v.1) + up (adv.). To lead up to "prepare gradually for" is from 1861.
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