noxious
Poisonous and offensive
Noxious describes something harmful, poisonous, or injurious to health or well-being.
Noxious fumes or gases can cause illness or death.
Noxious weeds are invasive plants that damage ecosystems or agriculture.
The word extends to anything unpleasant or corrupting: noxious ideas, a noxious influence on the committee.
Capable of causing death
- venomousProducing injected toxins
- harmfulCausing damage or injury
- lethalCausing or capable of death
- deadlyAble to cause expiration
virulent · carcinogenic · pathogenic · pestilential · baneful · pernicious · cytotoxic · neurotoxic
Offensive or illegal
- miasmicFilled with foul emanations
- malodorousHaving a bad smell
- fetidHaving foul odor
- putridDecomposed and foul-smelling
rancid · acrid · suffocating · choking · stifling · vaporous · gaseous · smoky
Causing harm or damage
- damagingCausing loss or injury
- injuriousCausing physical harm
- adverseHarmful or opposed
- destructiveCausing severe harm
pernicious · ruinous · corrosive · debilitating · impairing · undermining · counterproductive · negative
Causing displeasure or attack-oriented
- repugnantExtremely distasteful or offensive
- disgustingProvoking strong revulsion
- nauseatingCausing urge to vomit
- revoltingCausing strong disgust
vile · loathsome · repulsive · sickening · distasteful · abhorrent · disagreeable · objectionable
Substances released into air
- contaminationIntroduction of impurities
- smogSunlight-activated urban pollution
- exhaustUse up entirely
- effluentDischarged liquid waste
industrial · chemicals · runoff · waste · discharge · particulates · sewage · leachate
Encroaching without welcome
- unwantedNot wished for
- spreadingExtending over space
- chokingBlocked airway condition
- aggressiveHostile and confrontational
overgrowth · infestation · encroaching · parasitic · strangling · opportunistic · fast-growing · prolific
poisonous
Capable of causing death
deadly · virulent · carcinogenic · pathogenic · pestilential · baneful · pernicious · cytotoxic · neurotoxic · mutagenic
foul
Offensive or illegal
- miasmicFilled with foul emanations
- malodorousHaving a bad smell
- fetidHaving foul odor
putrid · rancid · acrid · suffocating · choking · stifling · vaporous · gaseous · smoky · reeking
detrimental
Causing harm or damage
destructive · pernicious · ruinous · corrosive · debilitating · impairing · undermining · counterproductive · negative · disadvantageous
offensive
Causing displeasure or attack-oriented
- repugnantExtremely distasteful or offensive
- disgustingProvoking strong revulsion
- nauseatingCausing urge to vomit
revolting · vile · loathsome · repulsive · sickening · distasteful · abhorrent · disagreeable · objectionable · nasty
emissions
Substances released into air
- contaminationIntroduction of impurities
- smogSunlight-activated urban pollution
- exhaustUse up entirely
effluent · industrial · chemicals · runoff · waste · discharge · particulates · sewage · leachate · pesticides
invasive
Encroaching without welcome
aggressive · overgrowth · infestation · encroaching · parasitic · strangling · opportunistic · fast-growing · prolific · stubborn
- smellsmell, scent, odor, reek, aroma
- scent wordsfragrant, aromatic, pungent, musty, musky
- cleanlinessclean, cleanliness, clean up, dirty, neatness
- disgustdisgust, disgusting, disgusted, revulsion, repulsion
- smokysmoky, smoking, smoldering, fuming, smoked
- scientific adjectivesalkaline, ionic, aquatic, inorganic, metallic
noxiousharmless
Causing no injury
nontoxic · safe · beneficial · healthful · healthy
noxiouswholesome
Conducive to well-being
beneficial · salutary · edifying · constructive · good
noxiouspleasant
Giving enjoyment or comfort
fragrant · agreeable · fresh · inoffensive · sweet-smelling
- noxious weedHarmful plant requiring control
- noxious fumesHarmful gases in air
obnoxious, noxiously, obnoxiousness, obnoxiously, noxiousness