Unhealthy
Harmful
Synonyms Harmful, destructive, damaging, ruinous, noxious, insalubrious, risky, perilous, detrimental, injurious, deleterious, malign, poisonous, baleful, and dangerous.
Ill
Synonyms Ill-looking, unwell, ailing, sickly, indisposed, unfit, feeble, delicate, infirm, washed out, peaky, in poor condition/shape, ill, in poor health, sick, poorly, unsound, weak, frail, debilitated, valetudinarian, run down, and out of condition/shape.
Unwholesome
Example Sentences
Eating too much junk food is unhealthy for you.
The unhealthy air quality made it hard to breathe.
He realized his lifestyle had become unhealthy over time.
The relationship was toxic and unhealthy for both of them.
Stress can lead to unhealthy habits if not managed.