Main entry: iffy, chancy, flukey, fluky
Definition: subject to accident or chance or change
Usage: a chancy appeal at best; getting that job was definitely fluky; a fluky wind; an iffy proposition
Main entry: chanceful, chancy, dodgy, dicey
Definition: of uncertain outcome; especially fraught with risk
Usage: an extremely dicey future on a brave new world of liquid nitrogen, tar, and smog- New Yorker