MORTAL Copy link • MORTALSubject to death, mortalis; morti obnoxius: mortals, homines, mortales (☞ m the best prose only in connection with omnes, cuncti, multi not for homines, general term). Deadly, destructive, mortifer (☞ letalis or letifer, poetical). Extreme (a vulgar acceptation of the word); by superlatives: a mortal enemy, hostis capitalis, infensissimus, implacabilis. Human, humanus.