whizbang

See also: whiz-bang

English

Etymology

whiz +‎ bang

Noun

whizbang (plural whizbangs)

1. (dated) A type of firework that made a whiz before exploding
2. (dated) A small artillery shell
   • World War I: Trench Songs, Oxford University

     Hush, here comes a Whizzbang

3. (by extension) Someone or something that holds an explosive amount of success, skill or effectiveness.
   • c. 1967, Evening Standard:

     She [Agatha Christie] has produced a whizzbang surprise which I am unable even to hint at without spoilsporting.