English edit

Etymology edit

Imitative.

Pronunciation edit

Interjection edit

fwoom

  1. The sound of a rocket (or similar) taking off.
    • 2015, Ryan North, The Unbeatable Squirrel Girl, number 2, page 21:
      Squirrel Girl: Well let's go to the friggin' moon.
      FWOOM
    • 2015, Mark H. Kruger, Overtaken, page 358:
      Fwoom! Oliver fired himself down the hall like a human rocket.