Find Synonyms

poison Synonyms

Another word for poison

Choosing another word for poison depends on context, so the 32 synonyms and similar words below are separated across 5 exact definitions and ranked by match strength.
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• noun (Context 1)

A substance that is capable of causing the illness or death of a living organism when introduced or absorbed.

Usage Example

"The ancient pharmacist studied the effects of various plant-based poisons and their antidotes."

Strongest
toxin
Strong
venom
toxicant
bane

• verb (Context 2)

To administer a toxic substance to a person or animal, or to contaminate food, water, or air with a harmful substance.

Usage Example

"Industrial runoff had poisoned the river, making the water unsafe for local wildlife."

Strong
contaminate
pollute
taint
envenom
befoul
Weak
foul
adulterate

• verb (Context 3)

To corrupt, ruin, or pervert a person's mind, a relationship, or an atmosphere.

Usage Example

"Years of unresolved resentment had gradually poisoned their friendship."

Strongest
corrupt
Strong
sour
embitter
taint
pervert
vitiate
spoil
ruin
Weak
subvert
warp

• noun (Context 4)

A destructive, corrupting, or harmful influence, attitude, or principle.

Usage Example

"Malicious gossip can act as a slow blight within a small community."

Strong
blight
canker
scourge
bane
contagion
cancer
pestilence
venom

• adjective (Context 5)

Poisonous, toxic, or venomous; containing or secreting a harmful substance (used primarily before a noun in compound names of plants or animals).

Usage Example

"Hikers were warned to watch out for poisonous ivy along the wooded trail."

Strongest
poisonous
toxic
Strong
venomous
noxious
deadly
lethal

Opposites of poison

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

nonpoisonous
antidote
nontoxic
decontaminate
antitoxin
nonvenomous
purify
detoxify
See all opposites of poison

Cite this Entry


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