Etymology
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all-in (adj.)
"without restrictions," 1890, from the adverbial phrase; see all + in (adv.).
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in-house (adj.)
also inhouse, 1955, from in (prep.) + house (n.).
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in-store (adj.)
also instore, 1954, from in (prep.) + store (n.). In Middle English, instore was a verb meaning "to restore, renew," from Latin instaurare.
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tie-in (n.)
"connection," 1934, from verbal phrase (attested by 1793), from tie (v.) + in (adv.).
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shoo-in (n.)
"easy winner" (especially in politics), 1939, from earlier sense "horse that wins a race by pre-arrangement" (1928); the verb phrase shoo in in this sense is from 1908; from shoo (v.) + in (adv.).
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shut-in (n.)
"person confined from normal social intercourse," 1904, from the verbal phrase, from shut (v.) + in (adv.).
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in-country (n.)
"interior regions" of a land, 1560s, from in (prep.) + country.
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be-in (n.)
"a public gathering of hippies" [OED], 1967, from be + in (adv.).
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in-migration (n.)
1942, American English, in reference to movement within the same country (as distinguished from immigration), from in (prep.) + migration.
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in-service (adj.)
also inservice, 1928, from in (prep.) + service (n.).
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