Doubtful or not settled in opinion; being in doubt; wavering or fluctuating; undetermined. Occasioning doubt; not clear, or obvious; equivocal; questionable; doubtful; as, a dubious answer. Of uncertain event or issue; as, in dubious battle.
(of a statement) Arousing doubt; questionable; open to suspicion. (of a person) In disbelief; wavering, uncertain, or hesitating in opinion; inclined to doubt; undecided.