Definition of noxious in US English:



  • Harmful, poisonous, or very unpleasant.

    ‘they were overcome by the noxious fumes’
    • ‘Residents quite rightly complain of flies, noxious odours, dust, seagulls and noise pollution from the site.’
    • ‘More to the point, it involves copious amounts of rubber cement and other noxious solvents.’
    • ‘What's less well understood is how noxious such projects are for the cities that surround them.’
    • ‘There is also a specific obligation to prevent the emission of noxious or offensive substances into the atmosphere.’
    • ‘In the past, I used to believe that in a democracy these people should be free to foul the airwaves with their noxious opinions.’
    • ‘The courts have experienced problems over the definition of poison or other noxious thing.’
    • ‘His continued presence in government taints it with the noxious smell of cronyism.’
    • ‘They fill the air with noxious fumes, besides causing sound pollution.’
    • ‘The noxious fumes are believed to have been caused by a sulphuric acid-based cleaning agent.’
    • ‘If the fox population is to be controlled, (as it must be) fox hunting is no more noxious than other means of doing this.’
    • ‘It is not necessary to prove damage to health from noxious emissions in order to establish a nuisance.’
    • ‘Narcissism is a noxious mental disease that leads people to grandiose delusions.’
    • ‘Burning glue sent noxious fumes into the night sky in Brentford this week, after a factory caught fire near the Great West Road.’
    • ‘Luckily I smelled the noxious fumes, ran upstairs and managed to extinguish it.’
    • ‘By vigorously churning the tank every day, she helps the noxious mixture rot and produce the methane that heats her tea.’
    • ‘It can remove toxic and noxious gases from sewers and clean the air of vaults and tanks.’
    • ‘It's an artificial fragrance used in an attempt to cover up the noxious smell of pesticides.’
    • ‘The closer I got to her room, the stronger I could smell the noxious fumes.’
    • ‘Visitors have to contend with toxic gases, noxious fumes, and showers of hot ash.’
    • ‘The residents say that even in fine and warm weather they also have to endure the noxious smell of sewage from their drains.’
    poisonous, toxic, deadly, virulent
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Late 15th century: from Latin noxius (from noxa ‘harm’) + -ous.