English Lexicon

Noxious

/ˈnɒk.ʃəs/
adjectiveCEFR C1 (Advanced)Top #4500 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Harmful, poisonous, or very unpleasant.

    "The noxious fumes from the factory made it difficult to breathe."
  2. 2

    Having a harmful effect on health or physical well-being.

    "The noxious weeds spread rapidly, choking out the native plants."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the Latin word 'noxius', meaning hurtful or harmful, which stems from 'noxa' meaning hurt, injury, or damage. Entering the English language in the late 16th century via Middle French, it has consistently retained its core semantic connotation relating to toxicity and harmfulness.

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