unhealthy

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un·health·y / ˌənˈhel[unvoicedth]ē/ • adj. (-health·i·er , -health·i·est ) harmful to health: an unhealthy diet. ∎  not having or showing good health: his face looked pale and unhealthy. ∎  (of a person's attitude or behavior) not sensible or well balanced; abnormal and harmful: an unhealthy obsession with fast cars.DERIVATIVES: un·health·i·ly / -[unvoicedth]əlē/ adv.un·health·i·ness n.