Find Antonyms

poison Antonyms

Opposite of poison

Because the opposite of poison shifts with each meaning, the 25 antonyms and opposite words below are separated across 5 exact definitions and ranked by contrast 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
antidote
antitoxin
Strong
antivenom
remedy
cure

• 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."

Strongest
decontaminate
Strong
purify
detoxify
cleanse
sanitize

• 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."

Strong
heal
mend
sweeten
nuture
enrich

• noun (Context 4)

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

Usage Example

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

Strong
balm
tonic
blessing
boon

• 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 nonpoisonous ivy along the wooded trail."

Strongest
nonpoisonous
nontoxic
Strong
nonvenomous
harmless
innocuous
wholesome

Similar words to poison

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

poisonous
toxic
toxin
corrupt
contaminate
venomous
blight
sour
See all synonyms of poison

Cite this Entry


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