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From ob (against, facing) + noxa (hurt, harm, injury).



obnoxius (feminine obnoxia, neuter obnoxium); first/second declension

  1. punishable, liable, guilty
  2. submissive, obedient, compliant
  3. obliged, indebted
  4. vulnerable
  5. susceptible to danger, misfortune, or weakness


First/second declension.

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative obnoxius obnoxia obnoxium obnoxiī obnoxiae obnoxia
Genitive obnoxiī obnoxiae obnoxiī obnoxiōrum obnoxiārum obnoxiōrum
Dative obnoxiō obnoxiae obnoxiō obnoxiīs obnoxiīs obnoxiīs
Accusative obnoxium obnoxiam obnoxium obnoxiōs obnoxiās obnoxia
Ablative obnoxiō obnoxiā obnoxiō obnoxiīs obnoxiīs obnoxiīs
Vocative obnoxie obnoxia obnoxium obnoxiī obnoxiae obnoxia

Derived termsEdit

Related termsEdit



  • obnoxius in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • obnoxius in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • obnoxius in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to be subject to some one, under some one's dominion: subiectum esse, obnoxium esse imperio or dicioni alicuius (not simply alicui)