Synonyms of noxious in English:

noxious


See definition of noxious

adjective

1‘the discharge of noxious effluents into streams and rivers’

SYNONYMS

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