# poisonous

> English word · Adjective · IPA /ˈpɔɪzənəs/ · frequency rank #13,586

## Definitions
1. Containing sufficient poison to be dangerous to touch or ingest.
2. Of an animal such as a snake or spider, or parts of its body: producing a toxin intended for defensive or offensive use which is usually injected into an enemy or prey by biting or stinging; hence, of a bite or sting: injecting poison.
3. Negative, harmful.

## Etymology
From Middle English poisounous, poysonouse. By surface analysis, poison + -ous.

## Common misspellings (12)
`opisonous`, `piosonous`, `poiosnous`, `poisnoous`, `poisonnous`, `poisonosu`, `poisonouss`, `poisonuos`, `poisoonus`, `poissonous`, `posionous`, `ppoisonous`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/poisonous