fizzle Share definition Flag A person who is afraid or too scared to do something. A "pussy". Dude #1: Go check if the ball is outside. Dude #2: No, its dark out there. Dude #1: You're such u fizzle! fizzle by Smokey4o9 April 27, 2008 0 0 Get merch Get the fizzle mug. Buy Now — $32.95 See more merch