Top definition
(exclamation): Originating as a greeting by Chief Thunderthud (the only Indian ever to have a moustache) to the Peanut Gallery on the 50's television program "The Howdy Doody Show", the term was later adopted by surfers in the 60's.
Chief Thunderthud: Cowabunga, peanuts!
The Peanut Gallery: Cowabunga!
Surfer: Cowabunga, dude!
by Vermont Ferret July 19, 2005
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An exclamation of rejoice from the early 1990s. Usually uttered by teenagers wearing neon colors. Brought to popularity by the ever-so-famous Teenage Mutant Ninja Turtles.
Leonardo: The pizza just got here!
Michaelangelo: COWABUNGA dude!
by quirky sally October 12, 2003
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3
60s SoCal surfer slang popularized by artist Matt Goening's animated skateboarding cartoon character Bart Simpson, son of Homer "Doh!" Simpson, on the still running ― 20+ years ― "The Simpsons" TV show.

Of course, surfers picked word up ― as Vermont Ferret wrote ― from Chief Thinderthud's greeting and his peanut gallery's response on the old time (1950s) children's TV show "Howdy Dowdy," an eponym for its cowboy manikin. Back then, on old corny Westerns, an Amerindian's greeting was stereotypically, "How!" to be rejoined with a "How!" So How morphed into Cow and an "abunga" was added for silly kid ― or those with Peter Pan syndrome ― fun.
by mpcAstro August 30, 2012
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4
a cool word used mostly by surfers to greet each other, say they are having a good time or just happy.
Kelly Slater- "Cowabunga!"
Laird Hamilton- "Totally, dude, this party is awesome!"
by Kewl Chick S July 07, 2009
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Positive, Good, Great, in an aspect greater than 'cool'.
mostly used by headbangers, metalheads, skaters, surfers, and ninja turtles.
by Darrel March 20, 2003
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6
its just a word u yell out...kinda like woohoo
by Cassidy February 23, 2004
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7
Quirky Sally's definition is fine, but the word originated from surfer slang in the early sixties.
Cowabunga! Look at her ride that wave.
by sgwm April 19, 2005
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