01 a. Doubtful or not settled in opinion; being in doubt; wavering or fluctuating; undetermined.
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1.
Doubtful or not settled in opinion; being in doubt; wavering or fluctuating; undetermined.“A dubious, agitated state of mind.” — Thackeray.
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2.
Occasioning doubt; not clear, or obvious; equivocal; questionable; doubtful; as, a dubious answer.“Wiping the dingy shirt with a still more dubious pocket handkerchief.” — Thackeray.
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3.
Of uncertain event or issue; as, in dubious battle.