Find Antonyms

deadly Antonyms

Opposite of deadly

Because the opposite of deadly shifts with each meaning, the 24 antonyms and opposite words below are separated across 6 exact definitions and ranked by contrast 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 nonlethal virus."

Strongest
nonlethal
harmless
benign
Strong
safe
wholesome
salutary

• adjective (Context 2)

Filled with or Marked by extreme hostility or implacable hatred.

Usage Example

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

Strongest
friendly
amicable
Strong
peaceable
benevolent

• adverb (Context 3)

To an extreme or intense degree; completely.

Usage Example

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

Strongest
slightly
mildly
Strong
moderately
somewhat

• adjective (Context 4)

Extremely accurate, precise, or effective.

Usage Example

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

Strongest
inaccurate
ineffective
Strong
inept
clumsy

• adjective (Context 5)

Extremely dull, monotonous, or dreary (informal).

Usage Example

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

Strongest
exciting
fascinating
lively
engaging

• adverb (Context 6)

In a manner resembling death.

Usage Example

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

Strongest
vibrantly
Strong
vitally

Similar words to deadly

Words similar to deadly shift depending on context. Common synonyms include:

deathly
fatal
lethal
extremely
unerring
mortal
implacable
tedious
See all synonyms of deadly

Cite this Entry


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