rebop, n. — Green’s Dictionary of Slang

rebop n.

[SE rebop, an echoic nonsense syllable used by jazz musicians, coined c.1945 as a description for the music of Dizzy Gillespie and Charlie Parker and ult. derived from Sp. Arriba! (up!) as used by rhumba bands to accompany a sudden shift in tempo]

(US) nonsense.

1946		D. Burley N.Y. Amsterdam News 4 May 19: [col. heading] Let Everybody Sing: ‘Hey Baba Rebop’.
1981		J. Ellroy Brown’s Requiem 36: ‘We used to talk sometimes.’ ‘About what?’ ‘Just rebop. The weather, that kind of shit.’.
1990		(con. early 1950s) J. Ellroy L.A. Confidential 124: I innocent of all this rebop you shuckin’ me with.
2001		(con. 1964–8) J. Ellroy Cold Six Thousand 91: Shouts overlapped [...] some nuggets in rebop and jive.
2005		E. Weiner Big Boat to Bye-Bye 173: ‘Can the rebop, fuckwad’.
2023		(con. 1962) J. Ellroy Enchanters 320: Doc, that criminal consciousness rebop lacks panache. let’s get down to the ooga-booga.