toxicとは 意味・読み方・使い方

発音

• (英国発音) IPA: /ˈtɒk.sɪk/
• (cot–caught merger) IPA: /ˈtɑk.sɪk/
• 韻: -ɒksɪk

形容詞

toxic (comparative more toxic, superlative most toxic)

1. (toxicology, pharmacology) Having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.

   Synonyms: poisonous, venomous

   Tobacco smoke contains many toxic substances.

   • 2019 December 8, Hannah Beech, Ryn Jirenuwat, “The Price of Recycling Old Laptops: Toxic Fumes in Thailand’s Lungs”, in New York Times‎:

     If some types of electronic waste aren’t incinerated at a high enough temperature, dioxins, which can cause cancer and developmental problems, infiltrate the food supply. Without proper safeguarding, toxic heavy metals seep into the soil and groundwater.

2. (medicine) Appearing grossly unwell; characterised by serious, potentially life-threatening compromise in the respiratory, circulatory or other body systems.

   The child appeared toxic on arrival at the hospital.

3. (figurative) Severely negative or harmful.

   a toxic environment that promoted bullying

4. (figurative) Of a person, hateful or strongly antipathetic.

   It is not good to be around toxic people.

   • 2020 April 23, Cal Newport, “'Expert Twitter' Only Goes So Far. Bring Back Blogs”, in Wired‎:

     Though Twitter is still overrun with toxic anger and fear-based nonsense (now more than ever), it is also, in one crucial way, beginning to play an important role in our response to the pandemic.

   • 2024 April 29, Jon Henley, “Surreal claims, lawfare and abuse: toxic politics in Spain reflect the new Europe”, in The Guardian‎, →ISSN:

     A veteran UN diplomat, Kaag, 62, said the environment for politicians in the Netherlands had become “toxic” as she and colleagues faced a continual barrage of “hate, intimidation and threats” and often needed tight police security.

   • 2025 November 16, Joanna Walters, quoting Marjorie Taylor Greene, “Marjorie Taylor Greene says Trump’s remarks hurtful but hopes they can make up”, in The Guardian‎, →ISSN:

     “I’m sorry for taking part in the toxic politics … put down the knives, be kind to one another … I never wanted to cause any harm,” [Marjorie Taylor] Greene said.

派生語

関連する語

• toxin (noun)
• intoxicate
• toxicant

Further reading

• “toxic”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• Douglas Harper (2001–2025), “toxic”, in Online Etymology Dictionary.