Synonyms for Noxious:
•deadly, injurious (adjective)
pestilent, harmful, unhealthy, putrid, poisonous, baneful, venomous, corrupting, unwholesome, insalubrious, pernicious, virulent, toxic.
gangrenous, unwholesome, pathological, diseased, contagious, septic, insalubrious, unhealthy, infected, deadly, unsanitary, toxic, unhygienic, poisonous, malignant, pestilent, contaminated.
n.hazardous, disastrous, risky, unsafe, perilous. help, virulent. •foul (noun)
rotten, offensive, putrid.
degrading, pestilent, vesicatory, corrupting, deadly, vesicant, pernicious, baneful, harmful.
Usage examples for noxious
It was perhaps that which made me faint; but as I did not feel any other ill effects, I began to hope that, either in passing through my jacket the poison had been scraped off, or that it has, as I have heard, but slight noxious effects on salt- eating Europeans." – On the Banks of the Amazon by W.H.G. Kingston