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lethally Synonyms

Another word for lethally

Choosing another word for lethally depends on context, so the synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adverb (Context 1)

In a manner or to a degree that is sufficient to cause death; fatally.

Usage Example

"Certain wild mushrooms are fatally toxic and must never be consumed."

Strongest
fatally
mortally
Strong
terminally
destructively

• adverb (Context 2)

To an extreme, devastating, or overwhelmingly effective degree (used figuratively).

Usage Example

"The debate champion was devastatingly accurate in dismantling her opponent's logical fallacies."

Strongest
devastatingly
Strong
dangerously
ruthessly
mercilessly

Opposites of lethally

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

harmlessly
mildly
benignly
ineffectively
weakly
safely
innocuously
See all opposites of lethally

• Nearby Words

letdown
lethal
lethality
lethally
lethargic
lethargically
lethargy

Cite this Entry

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