Fizzed down Share definition Flag A liquid that does have abit of fizz but has lost some due to being open a long period of time.Alcester slang " I wanted a drink that was fizzy mate not fizzed down " Fizzed down by clairedubstep August 1, 2013 0 0 Get merch Get the Fizzed down mug. Buy Now — $32.95 See more merch