Alternative formsEdit


From mors (death) +‎ -fer (-carrying), literally “death-bearing”. Calque of Ancient Greek θανατηφόρος (thanatēphóros).



mortifer (feminine mortifera, neuter mortiferum); first/second-declension adjective (nominative masculine singular in -er)

  1. deadly, fatal, lethal
    • Gospel of Mark, from 16:18
      Et sī mortiferum quid biberint nōn eōs nocēbit.
      And if they drink anything deadly it shall not harm them.


First/second-declension adjective (nominative masculine singular in -er).

Number Singular Plural
Case / Gender Masculine Feminine Neuter Masculine Feminine Neuter
Nominative mortifer mortifera mortiferum mortiferī mortiferae mortifera
Genitive mortiferī mortiferae mortiferī mortiferōrum mortiferārum mortiferōrum
Dative mortiferō mortiferō mortiferīs
Accusative mortiferum mortiferam mortiferum mortiferōs mortiferās mortifera
Ablative mortiferō mortiferā mortiferō mortiferīs
Vocative mortifer mortifera mortiferum mortiferī mortiferae mortifera


  • Italian: mortifero


  • mortifer in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • mortifer in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • mortifer in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
  • Carl Meissner; Henry William Auden (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to drain the cup of poison: poculum mortis (mortiferum) exhaurire (Cluent. 11. 31)
    • to inflict a death-blow: plagam extremam or mortiferam infligere
    • to inflict a mortal wound on some one: mortiferam plagam alicui infligere
    • to be (seriously, mortally) wounded: vulnus (grave, mortiferum) accipere, excipere