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ka-boom

American  
[kuh-boom] / kəˈbum /

interjection

  1. (used to represent a sudden and loud sound, as of an explosion or a bass drum.)

Etymology

Origin of ka-boom

ka-, boom 1

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.