doozy Share definition Flag Something extraordinary or bizarre. Etymology: perhaps alteration of daisy, and Duesenberg, a luxury car of the late 1920s and 1930s. It's an English expression. "That footballer's form is a doozy!", "Man, that one was a real doozy!" doozy by RaDragon March 29, 2005 0 0 Get merch Get the doozy mug. Buy Now — $32.95 See more merch