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noxious

Synonyms of noxious in English:

adjective

  • the discharge of noxious effluents into streams and rivers noxious fumes
    poisonous, toxic, deadly, virulent;
    harmful, dangerous, pernicious, damaging, destructive, environmentally unfriendly;
    very unpleasant, nasty, disgusting, awful, dreadful, horrible, terrible, vile, revolting, foul, sickening, nauseating, nauseous, appalling, offensive, foul-smelling, evil-smelling, malodorous, fetid, putrid, rancid, unwholesome, unhealthy, insalubrious
    informal ghastly, horrid
    Northern Irish informal bogging
    literary noisome, mephitic
    archaic disgustful
    rare miasmal, miasmic, nocuous, olid
    [Antonyms] innocuous, safe, pleasant
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