Subject to accident or chance or change. Synonyms:chancy, flukey, iffy."Getting that job was definitely fluky" , "A fluky wind" , "An iffy proposition"
... The other batsman played out the over, and de Freece proceeded to treat Ellerby's bowling with equal familiarity. The scoring-board showed an increase of twenty as the result of three overs. Every run was invaluable now, and the Ripton contingent made the pavilion re-echo as a fluky shot over mid-on's head sent up the hundred ... — Mike • P. G. Wodehouse