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Definition of lethally

lethally

/ˈliː.θəl.i/
le · thal · ly
Adjective:lethal
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lethally Lexical Profile

lethally Game Scores & Validity

• adverb

1

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

Example

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

2

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

Example

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

Synonyms
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Antonyms
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• Rhymes for lethally

• Nearby Words

letdown
lethal
lethality
lethally
lethargic
lethargically
lethargy

Word Origin & Etymology

Formed from the adjective 'lethal' plus the adverbial suffix '-ly'. The base word comes from Latin 'letalis' ('deadly'), derived from 'letum' ('death'), which was later influenced by the spelling of 'Lethe', the mythological Greek river of forgetfulness in the underworld.

Cite this Entry

Wordmom. (2026). Definition of Lethally. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/lethally
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