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cowabunga

[kou-uh-buhng-guh]
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interjection
  1. (a yell of exhilaration, mainly used by surfers.)
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Origin of cowabunga

of uncertain origin
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for cowabunga

interj.

1954, American English, from exclamation of surprise and anger by "Chief Thunderthud" in "The Howdy Doody Show," 1950s children's TV show; used by surfers 1960s as a shout of triumph, and spread worldwide 1990 by use in the TV cartoon "Teenage Mutant Ninja Turtles."

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Online Etymology Dictionary, © 2010 Douglas Harper