- harmful or injurious to health or physical well-being: noxious fumes.
- morally harmful; corrupting; pernicious: a noxious plan to spread dissension.
Origin of noxious
SynonymsSee more synonyms on Thesaurus.com
Examples from the Web for noxious
Eric Cantor was a noxious, cookie-cutter, U.S. Chamber, GOP hypocrite.Now Let’s Replace All the Other Big-Spending Eric Cantors
June 11, 2014
The most noxious of these figures is New York University professor and Nation magazine contributor Stephen Cohen.How the ‘Realists’ Misjudged Ukraine
March 3, 2014
When I got out of the car I was assailed by another of the noxious stinks that Lufkin is distinguished for.‘The Land of the Permanent Wave’ Is Bud Shrake’s Classic Take on ‘60s Texas
February 2, 2014
Only the advancement of liberal democracy could serve as an antidote to the noxious strains of Islamism emanating from the region.Was the Iraq War Worth It?
March 20, 2013
Dressed in his gray suit, he sat in stillness as the noxious fumes billowed into the cabin of his blue Chevy Chevelle.The Professor and the Doomsday Clock: ‘A Confederacy of Dunces’ & Signs of John Kennedy Toole’s Suicide
December 17, 2012
No, he does not find it; brambles are there and noxious weeds galore.The Book of Khalid
The excreta of that army of sick poisoned the air with their noxious emanations.The Downfall
At Verdun, along the entire frontier, there were nests of these noxious vermin.A Nest of Spies
With blood and iron we will ourselves stamp out this noxious breed.The Burning Spear
Now it happens that he is noxious to us—let the reasons be what they may.St. Martin's Summer
- poisonous or harmful
- harmful to the mind or morals; corrupting
Word Origin and History for noxious
c.1500, from Latin noxius "hurtful, injurious," from noxa "injury, hurt, damage entailing liability" (related to nocere "to hurt," and to nex "slaughter"), from PIE *nek-ro-, causative form of root *nek- "death" (see necro-).
- Harmful to living things; injurious to health.