1. doozy
something that is difficult or daunting
man that history exam was a doozy! i think i failed
2. doozy
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!"
3. Doozy
Something that is better than everything else. Also, a famous Runescape player who is one of the best in that game.
Man, I swear that weed was a doozy. ...