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Adjective deadly has 6 senses
- deadly, deathly, mortal - causing or capable of causing death; "a fatal accident"; "a deadly enemy"; "mortal combat"; "a mortal illness"
Antonym: nonfatal (indirect, via fatal)
- deadly, lethal - of an instrument of certain death; "deadly poisons"; "lethal weapon"; "a lethal injection"
Antonym: nonfatal (indirect, via fatal)
- deadly, venomous, virulent - extremely poisonous or injurious; producing venom; "venomous snakes"; "a virulent insect bite"
Antonyms: nontoxic, atoxic (indirect, via toxic)
- deadly, mortal - involving loss of divine grace or spiritual death; "the seven deadly sins"
Antonym: pardonable (indirect, via unpardonable)
- baneful, deadly, pernicious, pestilent - exceedingly harmful
Antonyms: innocuous, harmless (indirect, via noxious)
- deadly - (of a disease) having a rapid course and violent effect
Antonym: avirulent (indirect, via virulent)
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