adjective
1.
causing or causative of death
a deadly disease
Synonyms: deathly, fatal, lethal, mortal, mortiferous, pestilent, pestilential; compare pernicious
Related Word: destroying, destructive; killing, slaying; internecine; baneful, noxious, pernicious; poisonous, toxic, virulent
Contrasted words: healthful, healthy, wholesome; advantageous, beneficial, restorative, sanative
2.
Synonyms: pernicious , baneful, noxious, pestiferous, pestilent, pestilential
Contrasted words: harmless, innocuous, inoffensive, unoffending
3.
Synonyms: deathly 1, corpselike, corpsy, dead, deadened, deathful, deathlike