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deadly

deadly

543 2.8
Able to cause death or serious harm
  • adjective
  • /ˈdɛdli/
translation icon : letal
  • It was one of the deadliest attacks in CIA history.
  • deadly tornado
  • deadly disease
  • deadly weapon

So the flu is more deadly for two children than COVID is.

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Examples

  • The deadly virus spread rapidly, causing alarm among health officials.

  • But the process of mining the gold has had deadly consequences.

  • Travel by car is many times more deadly per mile than commercial air travel.

  • Is nuclear power a way to produce electricity or a path toward building deadly weapons?

    Academic text (2012)
  • So the flu is more deadly for two children than COVID is.

  • Several patients with rapidly advancing and deadly forms of cancer were cancer-free a few months later.

    Academic text (2012)
  • Its venom is a deadly mixture of chemicals that can kill a human in three minutes.

    Academic text (2011)
  • Life for these fierce, pint-size predators is a deadly serious game of risk and reward.

    Academic text (1991)
  • Diarrhea may not seem deadly to Westerners who have access to improved sanitation.

    Academic text (2015)
  • But they couldn't be immediately inspected because the building was contaminated with deadly rodent-borne hantavirus.

    Academic text (1999)

Synonyms

toxic
vsdeadly
380 4.0

Containing poison that can cause harm or death

is not limited to poison and covers any cause of death
fatal
vsdeadly
224 3.7

Causing a person's death

is the same general sense of causing death
lethal
vsdeadly
193 4.8

Able to cause death, for example by a weapon or poison

is broader, applying to causing death in general
poisonous
vsdeadly
90 2.8

Containing a substance that can make you sick and can cause death if eaten, touched, or breathed

is broader and not tied to poison as the cause of death
life-threatening
vsdeadly
66 4.3

Dangerous enough to cause death

implies it causes or can cause death rather than only risk
mortal
vsdeadly
26 6.0

Able to cause death

is identical in meaning in this sense
deathly
vsdeadly
3 6.8

Able to cause death or serious harm

shares the same fatal sense in this description

Antonyms

1.0

Not likely to be harmed or in danger

231 1.0

Not able to hurt people or things

Compounds

deadly sin
  • Formal
8 8.1

A very serious wrong action in Christian belief that leads to spiritual death unless you ask for forgiveness

1 4.6

Poison from an animal, like a snake or frog, that can kill people

A poisonous plant with bell-shaped flowers and shiny black or red berries

How Deadly

fatal
224 3.7
deadly
543 2.8
dangerous
1.5
risky
269 3.6
harmless
231 1.0

Surface Forms

deadly positive

Morphology

deadly = dead (semi-transparent) = dead + ly

While 'dead' and '-ly' are clear, the transformation to 'extremely dangerous' is not fully transparent.

Etymology

Deadly comes from dead 'not alive' plus the ending -ly, which here means 'causing' or 'full of'. So deadly literally means 'full of death' and describes something that can cause death.