1888, with ref. to baseball teams composed of the best players from the U.S. All-terrain vehicle first recorded 1970. All clear as a signal of "no danger" is recorded from 1902. All right, indicative of approval, is attested from 1953.
outO.E. ut, common Gmc. (cf. O.N., O.Fris., Goth. ut, Du. uit, Ger. aus), from PIE base *ud- "up, up away" (cf. Skt. ut "up, out," uttarah "higher, upper, later, northern;" Avestan uz- "up, out," O.Ir. ud- "out," L. usque "all the way to, without interruption," Gk. hysteros "the latter," Rus. vy- "out").
Meaning "unconscious" is attested from 1898, originally in boxing. Sense of "not popular or modern" is from 1966. The verb was O.E. utian "expel," used in many senses over the years. Meaning "to expose as a closet homosexual" is first recorded 1990; as an adj. meaning "openly avowing one's homosexuality" it dates from 1970s (see
closet; senses of "into public view" have been present in out since 16c.). Noun sense in baseball (1860) was originally from cricket, where it is attested from 1746. Adverbial phrase out-and-out "thoroughly" is attested from early 14c.; adj. usage is attested from 1813; out-of-the-way (adj.) "remote, secluded" is attested from late 15c. Out-of-towner "one not from a certain place" is from 1911. Shakespeare's It out-herods Herod ("Hamlet") reflects Herod as stock braggart and bully in old religious drama and was widely imitated 19c. Out to lunch "insane" is student slang from 1955; out of this world "excellent" is from 1938; out of sight "excellent, superior" is from 1891.