Dubious :: Dubious (a.) Doubtful or not settled in opinion; being in doubt; wavering or fluctuating; undetermined.
Dubious :: Dubious (a.) Occasioning doubt; not clear, or obvious; equivocal; questionable; doubtful; as, a dubious answer..
Dubious :: Dubious (a.) Of uncertain event or issue; as, in dubious battle..
Indubious :: Indubious (a.) Not dubious or doubtful; certain.