Green’s Dictionary of Slang

1. a garish, meretricious display, an event or occasion surrounded by such excesses.

1902		C.L. Cullen More Ex-Tank Tales 115: Little old New York, where no old kind of a financial raj-ma-taj ever stops the game.
1976		H. Selby Jr Demon (1979) 42: With a razzmatazz and a twenty-three skiddoo.
1980		T. Lewis GBH 54: ‘[H]e gives me the razz-ma-tazz but he’s slightly unsure of his delivery’.
1991		R.G. Barratt ‘Dr Doug Meets His Match’ in What Do You Reckon (1997) [ebook] The show started with the usual razzmatazz.
1997		D. Farson Never a Normal Man 37: I looked down from our box open-mouthed at the razzmatazz below.
2005		Guardian G2 5 May 2: The whole delirious cornball razzmatazz that passes for democratic politics.
2017		T. Spicer Good Girl Stripped Bare 102: The audience likes the illusion of television. Deconstruct the razzamatazz and what do you have? A girl from Redcliffe in a cheap dress: the antithesis of glamour.

2. anything old-fashioned, corny, out-of-date.

1937		R.B. Nye ‘A Musician’s Word List’ in AS XII:1 48: razmataz band. A band which plays in an outmoded style.
1953		Berrey & Van den Bark Amer. Thes. Sl. (2nd edn).
1967		W. Manus Mott the Hoople 55: Give ’em a spiel and a little razzamatazz.
2002		‘Touré’ Portable Promised Land (ms.) 160: We Words (My Favorite Things) [...] Razzmatazz.