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



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

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


First/second-declension adjective.

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 obnoxiō obnoxiīs
Accusative obnoxium obnoxiam obnoxium obnoxiōs obnoxiās obnoxia
Ablative obnoxiō obnoxiā obnoxiō obnoxiīs
Vocative obnoxie obnoxia obnoxium obnoxiī obnoxiae obnoxia

Derived terms[edit]

Related terms[edit]


  • Catalan: obnoxi
  • English: obnoxious
  • Portuguese: obnóxio
  • Spanish: obnoxio


  • 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)