uncertain, hazardous, or risky.

random; haphazard; subject to chance.

Chiefly Scot. lucky.

adjective

certain , not dangerous , safe , secure , sure , tried

adjective

capricious , contingent , dicey , erratic , fluctuant , fluky , hazardous , iffy * , incalculable , precarious , problematic , problematical , rocky , speculative , ticklish , touchy , tricky , uncertain , unpredictable , unsound , whimsical , borderline , clouded , doubtful , dubious , dubitable , equivocal , inconclusive , indecisive , indeterminate , questionable , unclear , unsure , adventurous , jeopardous , parlous , perilous , risky , treacherous , unsafe , venturesome , venturous , auspicious , dangerous , hairy , iffy