[syn: chancy, fluky, flukey, iffy]
The Collaborative International Dictionary of English v.0.48:
chancy \chancy\ adj.
   1. depending on chance.
   Syn: chanceful, dicey, dodgy, hazardous, risky.
        [WordNet 1.5]
   2. subject to accident or chance or change.
   Syn: fluky, flukey, iffy.
        [WordNet 1.5]
WordNet (r) 3.0 (2006):
chancy
    adj 1: of uncertain outcome; especially fraught with risk; "an
           extremely dicey future on a brave new world of liquid
           nitrogen, tar, and smog"- New Yorker [syn: chancy,
           chanceful, dicey, dodgy]
    2: subject to accident or chance or change; "a chancy appeal at
       best"; "getting that job was definitely fluky"; "a fluky
       wind"; "an iffy proposition" [syn: chancy, fluky,
       flukey, iffy]
Moby Thesaurus II by Grady Ward, 1.0:
116 Moby Thesaurus words for "chancy":
   accidental, adventitious, adventurous, agnostic, aleatoric,
   aleatory, ambiguous, amorphous, blobby, blurred, blurry, broad,
   capricious, casual, causeless, chance, changeable, chaotic,
   confused, contingent, destinal, dicey, disordered, doubting,
   equivocal, erratic, fatal, fatidic, fickle, fluctuant, fluky,
   foggy, fortuitous, full of risk, fuzzy, general, hairy, hazardous,
   hazy, hesitant, hesitating, hit-or-miss, iffy, ill-defined,
   imprecise, inaccurate, incalculable, inchoate, incidental,
   incoherent, indecisive, indefinable, indefinite, indemonstrable,
   indeterminable, indeterminate, indistinct, inexact, irresolute,
   jeopardous, lax, loose, nonspecific, obscure, on thin ice,
   orderless, perilous, polysemous, precarious, random, riskful,
   risky, shadowed forth, shadowy, shapeless, skeptical, speculative,
   stochastic, sweeping, ticklish, touch-and-go, touchy, treacherous,
   tricky, unaccountable, uncaused, uncertain, unclear, unconfirmable,
   unconvinced, undefined, undestined, undetermined, undivinable,
   unexpected, unforeseeable, unforeseen, unhealthy, unlooked-for,
   unpersuaded, unplain, unpredictable, unprovable, unsound,
   unspecified, unsure, unverifiable, vague, variable, veiled,
   venturesome, venturous, wavering, whimsical, wicked, wildcat