DUBIOUS, a. [L. See Doubt. The primary sense is probably to turn or to waver.]
1. Doubtful; wavering or fluctuating in opinion; not settled; not determined; as, the mind is in a dubious state.2. Uncertain; that of which the truth is not ascertained or known; as a dubious question.3. Not clear; not plain; as dubious light.4. Of uncertain event or issue.In dubious battle.