Synonyms to open question

borderline case, aliene, bedlamite, blind bargain, chance, contingency, crackbrain, crackpot, dement, demoniac, double contingency, energumen, fanatic, flake, fou, gamble, guess, idiot, kook, loon, loony, lunatic, madman, maniac, meshuggenah, noncompos, nut, phrenetic, piece of guesswork, question, raving lunatic, screwball, sight-unseen transaction, toss-up, touch and go, undecided issue, wager, weirdo, a leg up, accidental, accidentally, advantage, adventitious, adventure, aleatoric, aleatory, amorphous, appear, approach, aptitude, aptness, arise, assay, attempt, bare possibility, bechance, befall, bet, betide, blobby, blurred, blurry, bout, brave, break, broad, bump, by chance, calculated risk, capriciousness, careless, casual, causeless, certainty, chance it, chances, chanciness, chancy, changeableness, chaotic, clear stage, come, come about, come along, come forth, come into being, come into existence, come on, come to pass, conceivability, conceivableness, conceivably, confused, contingent, court destruction, crop up, dare, defy danger,