Find Synonyms

lethal Synonyms

Another word for lethal

Choosing another word for lethal depends on context, so the 16 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

Sufficient to cause death; deadly or fatal.

Usage Example

"Certain wild mushrooms contain a deadly toxin that can cause severe organ failure if ingested."

Strongest
deadly
fatal
mortal
Strong
murderous
poisonous
Weak
venomous
virulent
terminal

• adjective (Context 2)

Extremely harmful, destructive, or devastating in effect.

Usage Example

"High inflation paired with rising unemployment proved to be a devastating combination for the administration's reelection campaign."

Strongest
devastating
Strong
destructive
ruinous
catastrophic
disastrous
crippling
pernicious
damaging

Opposites of lethal

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

nonlethal
harmless
beneficial
benign
safe
constructive
innocuous
life-saving
See all opposites of lethal

• Nearby Words

let me
let-out
letdown
lethal
lethality
lethally
lethargic

Cite this Entry

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