dubius

Shortened form of duhibius (“held as two”), from duo (“two”) + habeō (“have, hold”).

• (Classical) IPA^(key): /ˈdu.bi.us/, [ˈdʊ.bi.ʊs]

dubius (feminine dubia, neuter dubium); first/second declension

1. Moving in two directions alternately, vibrating to and fro, fluctuating, wavering.
2. (figuratively) Vacillating in mind, uncertain; doubting, doubtful, dubious, irresolute, undetermined.
3. (of a situation) Precarious, dangerous, critical, difficult, adverse, doubtful.
4. (of weather) Changeable, uncertain.

First/second declension.

• (doubtful): indubius

• English: dubious
• Italian: dubbio
• Portuguese: dúbio

• 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