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Synonyms

lethiferous

American  
[li-thif-er-uhs] / lɪˈθɪf ər əs /

adjective

Archaic.
  1. lethal.


Etymology

Origin of lethiferous

1645–55; < Latin lētifer ( lēti-, combining form of lētum death ( lethal ) + -fer bearing) + -ous; -ferous