Search Dictionary
Definition of poison

poison

/ˈpɔɪ.zən/
poi · son

Adverb:poisonously
•
Plural:poisons
•
Adjective:poisonous
•
Past Simple:poisoned
•
Past Participle:poisoned
•
Present Participle:poisoning
JUMP TO:

poison Lexical Profile

poison Game Scores & Validity

• noun

1

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

Example

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


2

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

Example

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

Synonyms
View all synonyms for poison
Antonyms
View all antonyms for poison

• verb

1

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

Example

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


2

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

Example

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

Synonyms
View all synonyms for poison
Antonyms
View all antonyms for poison

• adjective

1

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

Example

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

Synonyms
View all synonyms for poison
Antonyms
View all antonyms for poison

Word Nuance & Usage

In biological contexts, 'poison' is absorbed, inhaled, or ingested (e.g., a poison dart frog or toxic plant), whereas 'venom' is actively injected through a bite or sting (e.g., from a snake or scorpion).

• Rhymes for poison

Word Origin & Etymology

Middle English, from Old French poison ('a drink, especially a medical draught or magic potion'), from Latin potio ('a drink'), derived from potare ('to drink'). It is a doublet of 'potion'.

Cite this Entry


Wordmom. (2026). Definition of Poison. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/poison
Built for writers, students, and competitive word game players, Wordmom combines an uncluttered English dictionary and thesaurus with fast, pattern-based word finders so you can verify definitions, synonyms, and high-scoring tile plays in one place.
Dictionary & Reference
© 2016–2026 Wordmom Network. All rights reserved. Made with for word lovers everywhere.
Disclaimer: SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A. and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. Words With Friends® is a registered trademark of Zynga Inc. Wordle® is a registered trademark of The New York Times Company. Other referenced game titles and tournament lexicon codes (including NASPA NWL and WESPA/HarperCollins CSW) are trademarks of their respective owners. Wordmom is an independent reference utility for educational and entertainment purposes and is not affiliated with, sponsored by, or endorsed by Hasbro, Mattel, Spear, Zynga, The New York Times Company, NASPA, WESPA, or HarperCollins Publishers. All game names are referenced strictly under nominative fair use to indicate compatibility.