Also found in: Wikipedia.


 (wăm′ō, hwăm′ō)
interj. Slang
Used to indicate the startling abruptness of a sound, action, or event: "The alarm goes off and—whammo!—we're all at our assigned stations" (Meg Greenfield).

[Alteration of wham.]


a variant form of wham2
References in periodicals archive ?
These entities let everything ride for a year at a time, then WHAMMO, they hit us with their bills all at one whack, with nary a thought of offering even the slightest glimmer of an idea of what we got for our money.
We just lit it up with an ultraviolet laser and -- whammo -- there was a lot of white light coming out," said Everitt.
And then whammo, he arrived at 8am, totally prepped and ready to go.
The biggest loser from Whammo Wednesday was Graeme Souness and the club he left 24 hours after a fate-sealing 3-0 defeat at Man City don't invite any confidence with Boyles.
Beyond an enthusiasm for sincere, manic outpouring, as well as a perfected ability to synchronize minute detail with whammo, allover gestalt, Pittman also shares Pollock's "sadistic and scatological sensibility," at times even his "Gothic-ness, violence, exasperation and stridency" (that's Clement Greenberg talking).
There we all were, chewing our caramels, wondering if Bing Bang-a-Bang Bong would have the edge over Bong Bing-a-Bing Bang and whether to give Croatia nul points, when, suddenly, during the interval - whammo - there it was.
Yet today, standing by the father of a 15-year-old son, this MTV rock-n-jock world scares the Whammo out of me.
The report suggested -- strongly -- that a downturn in the market and WHAMMO, Denver financial institutions are sitting on a ton of loans susceptible to foreclosure.
RU (Russia's oldest online music resource), and Whammo (Worldwide Home of Australasian Music & More Online).