certain, certain(p), sealed, sure

unsure, unclear, unsettled, optimistic, unpredictable, precarious, doubtful, uneasy, tenuous, iffy, unknown, murky, noncommittal, bleak, undetermined, apprehensive, dicey, cautious, unstable, anxious, ambivalent, pessimistic, unlikely, skeptical, unknowable, skittish, sanguine, perilous, difficult, undecided, grim, fearful, hopeful, ambiguous, debatable, jittery, future, unknown quantity, hesitant, tightlipped, shaky, fragile, coy, wary, undefined, challenging, hazy, unconvinced, indeterminable, unresolved, noncommital, questionable, unsteady, turbulent, dire, gloomy, conflicted, glum, cloudy, equivocal, unpromising, likely, confident, dependent, untenable, ominous, uneven, tense, undaunted, fluctuating, concerned, indecisive, volatile, unshaken, sketchy, straitened, daunting, unconcerned, confused, clouded, unhappy, muddled, weak, problematical, troubling, untested, tough, reluctant, cognizant, probable, mindful, stormy, imponderable, uncomfortable, upbeat, sluggish, rough sledding, indeterminate, dim, leery, unforthcoming, perplexed, a2, approximate, indigence, matings, pos, positive, self, a, ac, actuality, actualization, adult, ag, anterior, b, b2, bal, benefit, beta, birth, chancy, determinable, predictable, confusing, ascertainable, ble, determinate, discouraging, disorienting, exact, grimmer, stressful

., agnostic, agnostical, aleatory contract, ambiguous, ambivalent, autacoid, autocoid, bambusa vulgaris, chanceful, chancy, cliffhanger, common bamboo, conjecture, contingent, crapshoot, dicey, dither, dodgy, equivocal, gropingly, gulf war syndrome, hypothecate, hypothesise, hypothesize, illyria, indeterminate, irresolute, persian gulf illness, puzzle, shillyshally, speculate, suppose, suspense, theorise, theorize, up in the air, vacillant, vacillating, venture, wavering

changeable, dubious, flukey, fluky, groping, incertain, indefinite, insecure, undependable, unreliable, unsafe, unsealed, variable