Shortened form of duhibius (“held as two”), from duo (“two”) + habeō (“have, hold”).
dubius (feminine dubia, neuter dubium); first/second declension
- Moving in two directions alternately, vibrating to and fro, fluctuating, wavering.
- (figuratively) Vacillating in mind, uncertain; doubting, doubtful, dubious, irresolute, undetermined.
- (of a situation) Precarious, dangerous, critical, difficult, adverse, doubtful.
- (of weather) Changeable, uncertain.
- dubius in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
- dubius in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
- dubius in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
- dubius in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
- Carl Meissner; Henry William Auden (1894) Latin Phrase-Book, London: Macmillan and Co.
- a critical position; a hopeless state of affairs: res dubiae, perditae, afflictae
- vague rumours reach us: dubii rumores afferuntur ad nos
- to throw doubt upon a thing: in dubio ponere
- to leave a thing undecided: aliquid in medio, in dubio relinquere (Cael. 20. 48)
- without doubt, beyond all doubt: sine dubio (not sine ullo dubio)
- (ambiguous) to throw doubt upon a thing: in dubium vocare
- (ambiguous) to become doubtful: in dubium venire
- (ambiguous) to leave a thing undecided: aliquid dubium, incertum relinquere