Deadly synonyms
Category:
Part of speech:
(Computing) Causing a sudden end to the running of a program.
The definition of lethal is something very harmful or destructive, especially something that could cause death.
Causing or likely to cause death
(Informal) Capable of devastating or overwhelming:
Acting as a poison; poisonous
Malignant; spiteful; malicious
Having a tendency to homicide; murderous
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The definition of noxious is something very unpleasant or something poisonous.
Causing destruction; damaging.
Dreadful; appalling
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Harmful often in a subtle or unexpected way (as for example deleterious effects, deleterious to health).
Miserable, wretched, distressed, suffering.
(Chiefly medicine, of a disease or disease-causing agent) Highly infectious, malignant, or deadly.
Causing or tending to cause cancer.
dangerous (related)
Full of danger; likely to cause injury, pain, etc.; unsafe; perilous
The definition of pernicious is deadly or very destructive.
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beneficial (antonym)
Producing or promoting a favorable result; advantageous:
dull (related)
Arousing little interest; lacking liveliness; boring:
The definition of dire is something so bad or scary that it causes distress or terror.
The definition of tiresome is something tedious, boring or exceedingly dull.
reviving (antonym)
Causing death
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brutal (related)
Causing harm to one's reputation; slanderous, libelous, invidious.
Producing pestilence or plague; pestilent
Morally evil or deadly; pernicious.
death-dealing
Causing death
(Informal) Extremely reckless.
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Tending toward cannibalism.
Causing or able to cause harm; hurtful
Very forceful:
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Boring, monotonous, time consuming, wearisome.
Participating or tending to participate in a very dangerous or difficult sport:
Of, like, or characteristic of a ghost; spectral
Mutually destructive; most often applied to warfare.
(Archaic) Annoying; troublesome
Bringing or tending to bring ruin; very destructive or harmful; disastrous
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Having or showing no pity; merciless; relentless
Without mercy or compassion
harmless (antonym)
Not giving rise to legal liability:
healthy (antonym)
Sizable; considerable:
wholesome (antonym)
Characterized by health and vigor of mind and body; specif., morally sound
animating (antonym)
causing end of life
invigorating (antonym)
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lively (antonym)
Full of energy or alertness; vigorous or animated:
Containing life; living.
Emaciated; gaunt:
live (related)
Of a performance or speech, in person.
help (related)
Extremely destructive or harmful
(used as intensives) extremely
(used as intensives) extremely
(used as intensives) extremely
lifelessly
as if dead
vicious (related)
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terrifying (related)
ferocious (related)
feared (related)
fearsome (related)
killer (related)
merciless (related)
poison (related)
The definition of boring is something for making holes.
energizing (antonym)
causing end of life
(used as intensives) extremely
Synonym Study
- Lethal is applied to that which in its nature or purpose is a cause of death a lethal weapon, a lethal dose
- Mortal implies that death has occurred or is about to occur and is applied to the immediate cause of death he has received a mortal blow
- Fatal implies the inevitability or actual occurrence of death or disaster a fatal disease, a fatal mistake
- Deadly is applied to a thing that can and probably (but not inevitably) will cause death a deadly poison
Find another word for deadly. In this page you can discover 81 synonyms, antonyms, idiomatic expressions, and related words for deadly, like: fatal, lethal, malignant, murderous, toxic, venomous, homicidal, noxious, destructive, poisonous and bloody.