truefish Share definition Flag Confirmation that something previously stated is correct. Usually used to emphasise how true something cool/epic/awesome is. Where you wouldn't use the phrase: "That colour doesn't really suit you" "True"And when you would use it: "You are one cool dude!" "Truefish!""That film was amazing!" "Truefish!" truefish by Mantony May 3, 2010 Get the truefish mug.