unhealthy
adj. A2 Elementary US //ənˈhɛɫθi// UK //ʌnhˈɛlθi// un·healthy
adj. harmful to your body or mind. You use this to describe food, habits, or even relationships that make you feel worse over time.
adj. harmful to physical or mental health; not indicative of good health or well-being. Often describes lifestyle choices, physiological states, or interpersonal dynamics.
Eating too much sugar is unhealthy for your teeth.
The doctor warned him that his unhealthy diet and lack of sleep were causing his high blood pressure.
The therapist noted that their constant need for validation had created an unhealthy dependence that prevented both partners from developing individual interests.
From un- + healthy.
Usage
Gradable adjective; commonly modified by 'very', 'highly', or 'extremely'.