poisonous
English · Thesaurus
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poisonous
- /ˈpɔɪzənəs/
- /ˈpɔɪznəs/
Rhymes with -ɔɪzənəs, -ɔɪznəs
Where it comes from
From Middle English poisounous, poysonouse. By surface analysis, poison + -ous.
adjective more poisonous · most poisonous
-
Containing sufficient poison to be dangerous to touch or ingest.
While highly poisonous to dogs, this substance is completely harmless if ingested by humans.
Similar: poisoned, toxic, venomous, attery · Opposite: nonpoisonous, unpoisonous
- 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. Poisonous snakes should only be handled by experienced professionals.
-
Negative, harmful.
He didn't want to end up like his grandfather, bitter and intractable, consumed in his hatred like an addict on haze — a poisonous attitude that would possess him all his remaining years.
Similar: toxic
Thesaurus
Closest in meaning: venomous, toxicant, toxic, vicious, malevolent, malicious, inedible, uneatable, poisoned, poison, toxicity, toxicological, toxin, drug, toxics, narcotics
Translations
Every language
adj containing sufficient poison to be dangerous
| Español | ponzoñoso |
|---|---|
| 中文 | 有毒的 yǒudú de |
| हिन्दी | विषाक्त viṣākt, ज़हरीला zahrīlā |
| Português | tóxico, venenoso |
| Français | vénéneux, toxique |
| Deutsch | giftig |
| Italiano | velenifero, velenoso, tossico |
| Ελληνικά | δηλητηριώδης dilitiriódis |
| Română | otrăvitor, veninos |
| Русский | ядови́тый jadovítyj, токси́чный toksíčnyj |
| العربية | سَامّ sāmm |
Talk about this word "poisonous." Wiktionary, via Micwyn, micwyn.com/word/poisonous. Accessed 6 Nov. 2026. poisonous. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/poisonous "poisonous." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/poisonous.Cite this
@misc{poisonous_2026,
title = {poisonous},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/poisonous},
urldate = {2026-11-06}
}
