Meaning of whammo


Pronunciation: (hwam'ō, wam'ō), [key]
— Informal. Informal.
  1. (used to indicate the sound of a blow, collision, falling object, etc.).
  1. immense energy; vigor: a movie with plenty of whammo to please the kids.
  1. characterized by such a strong effect: a show with a whammo ending.
  1. wham.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.