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In some senses, whizbang is marked as dated, figuratively. Watch for register when choosing this word.
whizbang
noun 3
Definitions
noun
1
A type of firework that made a whiz before exploding.
2
A small artillery shell.
World War I: Trench Songs, Oxford University Hush, here comes a Whizzbang
3
Someone or something that holds an explosive amount of success, skill or effectiveness.
She [Agatha Christie] has produced a whizzbang surprise which I am unable even to hint at without spoilsporting.
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