ISEE/SSAT Vocabulary BuilderWordsNnoxious
ISEE/SSAThard
noxious
Meaning: harmful or poisonous to living things
noxious in a sentence
How noxious is used in real sentences:
Noxious smoke drifted from the burning plastic and stung our eyes.
The workers left the room when a noxious vapor made them cough and feel dizzy.
“Near the loading dock, a broken treatment tank released noxious fumes, and water in a cooling trench became brackish after tidal flooding pushed salt upstream.”
— from the passage The Authority No Chart Showed
Synonyms for noxious
Other words for noxious — harmful, toxic and poisonous — carry the same meaning.
- harmful
- toxic
- poisonous
Antonyms of noxious
Words that mean the opposite of noxious:
- harmless
- wholesome
- beneficial
Where it comes from
From Latin noxius, meaning 'harmful,' from noxa, meaning 'harm.'
Memory hook
NOXIOUS sounds like 'knocks us'; harmful fumes can knock us down.