Find Synonyms

deadly Synonyms

Another word for deadly

Choosing another word for deadly depends on context, so the 37 synonyms and similar words below are separated across 6 exact definitions and ranked by match strength.
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• adjective (Context 1)

Causing or capable of causing death.

Usage Example

"Researchers are working to develop an effective treatment for the lethal virus."

Strongest
lethal
fatal
mortal
Strong
virulent
murderous
pernicious
toxic
venomous
noxious

• adjective (Context 2)

Filled with or Marked by extreme hostility or implacable hatred.

Usage Example

"The two rival merchants remained mortal competitors throughout their careers."

Strongest
mortal
implacable
Strong
sworn
bitter
relentless
unforgiving
merciless

• adverb (Context 3)

To an extreme or intense degree; completely.

Usage Example

"The committee members were extremely serious about reforming the safety regulations."

Strongest
extremely
utterly
dead
Strong
profoundly
supremely
intensively

• adjective (Context 4)

Extremely accurate, precise, or effective.

Usage Example

"The critic was known for her unerring wit and unerring eye for detail."

Strongest
unerring
infallible
Strong
pinpoint
devastating
precise
exact
incisive

• adjective (Context 5)

Extremely dull, monotonous, or dreary (informal).

Usage Example

"The three-hour budget lecture was positively tedious."

Strongest
tedious
monotonous
mind-numbing
Strong
dreary
boring
tiresome

• adverb (Context 6)

In a manner resembling death.

Usage Example

"The patient looked deathly pale after the long procedure."

Strongest
deathly
Strong
ghastly
mortally

Opposites of deadly

The opposite of deadly shifts depending on context. Common opposites include:

nonlethal
friendly
exciting
slightly
ineffective
inaccurate
harmless
fascinating
See all opposites of deadly

Cite this Entry


Wordmom. (2026). Synonyms for Deadly. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/deadly
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