deleteriously

/ˌdɛlɪˈtɪriəsli/
adverb
  1. In a way that causes harm or damage, especially gradually.
    • Stress can deleteriously influence your ability to concentrate.
    • The new policy affected small businesses deleteriously.
    • The chemical affects the soil deleteriously over many years.
Antonyms
What does "deleteriously" mean? | whatsthatwordmean | whatsthatwordmean