venomous

adjective

ven·​om·​ous ˈve-nə-məs 

1

: producing venom in a specialized gland and capable of inflicting injury or death

venomous snakes

2

: full of venom: such as

a

: poisonous, envenomed

b

: noxious, pernicious

… expose a venomous dope ring …

—Don Porter

c

: spiteful, malevolent

venomous criticism

venomously adverb

venomousness noun

Synonyms of venomous

• poisonous
• poisoned
• poison

Examples of venomous in a Sentence

The cobra is a venomous snake.

a venomous attack on his character

Recent Examples on the Web

Prior studies have indicated there isn’t always a connection between pain and lethality in a venomous insect’s sting. —Andrew Paul, Popular Science, 4 Dec. 2025

The courage of the defendants thwarted Riumin’s venomous ambition. —Wendy Z. Goldman, The Conversation, 1 Dec. 2025

The store released the non-venomous reptiles into the wild. —Faith Karimi, CNN Money, 28 Nov. 2025

The sudden appearance of a venomous pit viper named Gary De’Snake (Ke Huy Quan) sends the partners on a dangerous mission to find out why reptiles are outsiders in Zootopia and how Gary is connected to an old journal that contains the patent for the weather walls that create the city’s ecosystem. —Brian Truitt, USA Today, 25 Nov. 2025

Word History

Etymology

Middle English venimous, borrowed from Anglo-French venimus, venimous, from venim venom entry 1 + -us, -ous -ous

First Known Use

14th century, in the meaning defined at sense 2

Kids Definition

venomous

adjective

ven·​om·​ous ˈven-ə-məs 

: having or producing venom

venomous snakes

venomously adverb

Medical Definition

venomous

adjective

ven·​om·​ous ˈven-ə-məs 

1

: poisonous

2

: producing venom in a specialized gland and capable of inflicting injury or death

the vipers, pit vipers, and coral snakes are venomous