Dū'bi-oŭs, a.
a. [Lat. dubius, from dubare, equivalent to dubitare; Lat. also dubiosus; It. dubbio, dubbioso. See DOUBT.]
Sense 1. Not settled, or doubtful, in opinion; wavering or fluctuating; undetermined; doubtful. “A dubious, agitated state of mind.” Thackeray. “Dubious policy.” W. Scott.
Sense 2. Occasioning doubt; not clear or plain. “Dubious light.” Milton.
Sense 3. Of uncertain event or issue; as, in dubious battle. Milton.
Synonyms—Doubting; unsettled; undetermined; doubtful; ambiguous; equivocal; questionable; uncertain; precarious.