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Synonyms for lethal
adj deadlyAntonyms for lethal
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.
deadly
adjective. causing end of life
- 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
destructive
adjective. injurious, devastating
- annihilative
- baleful
- baneful
- calamitous
- cancerous
- cataclysmic
- catastrophic
- consumptive
- cutthroat
- damaging
- deadly
- deleterious
- detrimental
- dire
- disastrous
- eradicative
- evil
- extirpative
- fatal
- fell
- harmful
- hurtful
- internecine
- lethal
- lethiferous
- mortal
- noisome
- noxious
- pernicious
- pestiferous
- pestilential
- ruinous
- slaughterous
- suicidal
- toxic
- venomous
- wrackful
- wreckful
fateful
adjective. deadly
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the
Philip Lief Group.