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noxious

noxious

19 7.8
Harmful to health or strongly unpleasant to the senses
  • adjective
  • /ˈnɑkʃəs/
translation icon : nocivo
  • It's no wonder that this noxious plant was recently listed as one of Florida's most serious invasive weeds.
  • noxious weeds
  • noxious odor
  • noxious fumes

It's it's not so noxious to taste, easier to chew.

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Examples

  • His kidneys are wearing down, emitting noxious chemicals into his body, causing him to pass out every so often.

    Fiction book (1996)
  • The fumes are noxious.

  • We want to assess any environmental impact from your operation, - - like the presence of noxious, hazardous chemicals.

  • Responses of host community residents to proposed noxious facilities are influenced by many interacting factors.

    Academic text (1998)
  • But some people find even the tiniest bit of the smell of skunk or must to be noxious or awful.

  • Now kudzu is considered a noxious weed in certain states, having overgrown many a roadside landscape.

    Academic text (1996)
  • The factory emitted noxious gases that harmed the workers' health.

  • She covered her nose to avoid inhaling the noxious fumes from the chemical spill.

  • The noxious weeds spread quickly, choking the life out of the garden plants.

Synonyms

toxic
vsnoxious
380 4.0

Containing poison that can cause harm or death

is broader, covering harm or unpleasantness not limited to poison
poisonous
vsnoxious
90 2.8

Containing a substance that can make you sick and can cause death if eaten, touched, or breathed

may also apply to unpleasant harmful things that are not poison
noisome
vsnoxious
1 9.9

A very strong, unpleasant smell that can make you ill

focuses on general harm or poison rather than only bad smells
miasmic
vsnoxious
1 9.9

Full of a strong bad smell that makes the air feel unhealthy

is broader, meaning harm or unpleasantness not limited to bad air
nocent
vsnoxious
  • Specialized
9.9

Causing harm to people, animals, or plants

includes unpleasantness or poison as well as general harm

Antonyms

231 1.0

Not able to hurt people or things

138 3.4

Making something better or producing a good result

30 6.5

Unlikely to hurt or upset people

How Harmful

lethal
193 4.8
poisonous
90 2.8
noxious
19 7.8
harmful
161 2.6

Surface Forms

noxious positive
noxiouser comparative
noxiousest superlative

Morphology

noxious = nox + ious

Although the suffix '-ious' is a productive adjective-former, the root 'nox' is a non‑productive Latin base not recognizable as an English word, so learners cannot derive the meaning from the components.

Etymology

Noxious comes from the Latin noxius, which means 'harmful', and from noxa 'harm'. Think of innocent, which uses the same root with in- meaning 'not', so 'innocent' is 'not harmful'. That's why noxious means 'harmful' or 'poisonous'.