deadly

Synonyms: baleful baneful bloodthirsty bloody cannibalistic carcinogenic cruel dangerous death-dealing deathly deleterious destroying destructive fatal grim harmful homicidal injurious internecine killing lethal malignant mortal mortiferous murderous noxious pernicious pestiferous pestilent pestilential poisonous ruthless savage slaying suicidal toxic unrelenting venomous violent virulent

Antonyms: animating energizing harmless healthful healthy invigorating wholesome

Synonyms: ashen corpselike dead deadened deathful deathlike deathly ghastly pallid wan white

Antonyms: lively