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venomous

American  
[ven-uh-muhs] / ˈvɛn ə məs /

adjective

  1. (of an animal) having a gland or glands for secreting venom; able to inflict a poisoned bite, sting, or wound.

    a venomous snake.

  2. full of or containing venom; poisonous.

    a venomous wound; a venomous potion.

  3. spiteful; malignant.

    a venomous attack; a venomous tongue.

    Synonyms:
    ill-disposed, rancorous, hostile, malicious

Other Word Forms

Etymology

Origin of venomous

1250–1300; Middle English venim ( o ) us < Anglo-French venimus ( Old French venimeux ). See venom, -ous

Compare meaning

How does venomous compare to similar and commonly confused words? Explore the most common comparisons:

Explanation

An animal that is venomous produces poison. Also, people act in a venomous way when they are cruel, evil, or deliberately harmful. Both senses of venomous have to do with poison. The first meaning is literal: if a venomous snake bites you, you could die. Venomous animals are extremely dangerous, and their bite requires immediate medical attention. For people, being venomous is a little different. Spreading lies is venomous. Stealing someone's significant other is venomous. Anytime someone is being destructive on purpose, it's venomous. For people, venomous means something close to villainous — being venomous is like spreading metaphorical poison.

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Vocabulary lists containing venomous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Now, an international team of scientists has discovered that one of the region's most mysterious venomous snakes is not a single species after all.

From Science Daily • May 26, 2026

And then, of course, spiders are venomous, toting enough toxin to immobilize and liquify prey and, in a few cases, cause lesions, necrosis or death in humans.

From The Wall Street Journal • May 15, 2026

Rattlesnakes are the only native venomous serpent in the state, according to the University of California Agriculture and Natural Resources.

From Los Angeles Times • Apr. 21, 2026

The African Snakebite Institute warns that traditional remedies are not known to work against highly venomous snakes.

From BBC • Feb. 7, 2026

The Manticore has a lion’s body, a man’s face, and a tail with a venomous snake’s head at the end of it.

From "The Lives of a Cell" by Lewis Thomas

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