deleterious
[ del-i-teer-ee-uhs ]
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Part of Speech adjective
Origin + Etymology
Mid 17th century; Latin via medieval Latin from Greek dēlētērios ‘noxious’ + -ous
Synonyms
  • detrimental
  • hurtful
  • injurious
Antonyms
  • helpful
  • safe
Definition
injurious to health
Example
The locked cabinet in the science lab is filled with deleterious substances.
Usage Over Time

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