uncertain

ambiguous ambivalent apprehensive approximate arguable bewildered borderline casual chancy changing changeable circumstantial conjectural conditional clouded controversial contingent debatable delicate dicey disputable disturbing doubtful doubtful dubitable dubious enigmatic/enigmatical enigmatic erratic fallible fishy flickering fluky general hairy halting hazardous hazy hesitating hypothetical improbable incalculable incomputable inconsistent inconstant inconclusive incredulous indefinite inexplicit intangible irregular irresolute leery lukewarm measureless mootable moot most enigmatical more possible more open most enigmatic most enigmatic more erratic more enigmatic more enigmatic more enigmatical most possible nebulous on the fence opaque open precarious perilous perplexed perturbing possible provisory problematical problematical problematic queasy risky reluctant rocky self-conscious rougher roughest rough shaky spasmodic speculative stumped suspect suspicious suspected temperamental tenebrous ticklish tottering tottery torn touch-and-go troublous undecided unanswered unapt uncountable unclear undependable unforeseeable unintelligible unsubstantiated unsettled unsettled unreliable upsetting unsafe unpredictable unsure unstablest unstablest unsettling unsteadier unstabler unstabler unstable/unsteady unstable unsteadiest up in the air vacillating vacillating vague variable varying weak weak weakest weakest weak-minded weaker weaker whimsical aspirational