"chancy" in the adjective sense
1. chancy, chanceful, dicey, dodgy
of uncertain outcome especially fraught with risk
"an extremely dicey future on a brave new world of liquid nitrogen, tar, and smog"- New Yorker
2. chancy, fluky, flukey, iffy
subject to accident or chance or change
"a chancy appeal at best"
"getting that job was definitely fluky"
"a fluky wind"
"an iffy proposition"
Source: WordNet® (An amazing lexical database of English)
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