poisonous

/ˈpɔɪ.zə.nəs/

adjectivepoi · son · ous

Think: “POI-son-OUS” — if it has POI (poison) in it, it’s dangerous to us.

Yes, it's poisonous. Don’t add an extra letter: it’s poison + ous → poisonous (not *poisonious*).

Definitions

  1. adjectiveContaining or producing poison; able to cause illness, injury, or death if eaten, touched, or breathed in.
  2. adjective(Figurative) Very harmful or damaging, especially to relationships or attitudes.

Examples

  • “Some mushrooms look harmless but are actually poisonous.”
  • “The label warned that the cleaning liquid was poisonous if swallowed.”
  • “Gossip can be poisonous to a team’s trust.”

Synonyms

toxicvenomousharmfulnoxiousdeadly

Antonyms

harmlessnonpoisonous

Translations

ES venenosoPT venenosoFR vénéneux

Common misspellings

poisenouspoisnouspoisonuspoisoniouspoisionouspoisenuspoisonnouspoizonous

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