deleterious
/ˌdɛlɪˈtɪriəs/
adjective
- Causing harm or damage, especially in a gradual or subtle way.
- Too much screen time can have a deleterious effect on your eyesight.
- The factory's waste had a deleterious impact on the local river ecosystem.
- Lack of sleep is deleterious to both physical and mental health.
Antonyms