adj. 25B6; adjective UNRESOLVED, uncertain, unsure, unclear, unsettled, indefinite, undetermined, unknown, in the balance, up in the air, debatable, arguable, moot, open to question, doubtful, dubious, borderline, ambiguous, vague; indecisive, irresolute, hesitant, tentative, wavering, vacillating, uncommitted, ambivalent, in two minds; informal iffy.
certain.