Definition of noxious in US English:

noxious

adjective

  • 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
    View synonyms

Origin

Late 15th century: from Latin noxius (from noxa ‘harm’) + -ous.

Pronunciation

noxious

/ˈnäkSHəs//ˈnɑkʃəs/