ka·​boom | \ kə-ˈbüm How to pronounce kaboom (audio) \
plural kabooms

Definition of kaboom

informal : the sound of an explosion or crash heard a loud kaboom often used interjectionally Have you ever watched metallic sodium hit water? Kaboom. Krakatau revisited …— Don AsherBut it seems to me that the minute you build an emergency fund—kaboom! Along comes an "emergency."— Jane Bryant Quinn
go kaboom
1 informal : to explode or crash violently … when the house exploded the night before, cops believed that it had been a drug factory that went kaboom— Larry Celona and Ruth Brown
2 informal : to undergo a sudden, explosive change, failure, etc. … a few crucial injuries can make the whole equation go kaboom.— Paul Zimmerman

First Known Use of kaboom

1876, in the meaning defined above

History and Etymology for kaboom

ka-, unstressed syllable prefixed to onomatopoeic words + boom entry 2

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Cite this Entry

“Kaboom.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/kaboom. Accessed 2 Mar. 2021.

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