American English

Definition of unhealthy adjective from the Oxford Advanced American Dictionary



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  1. 1not having good health; showing a lack of good health They looked poor and unhealthy. unhealthy skin His eyeballs were an unhealthy yellow.
  2. 2harmful to your health; likely to make you sick unhealthy living conditions an unhealthy diet/lifestyle
  3. 3not normal and likely to be harmful synonym unwholesome He had an unhealthy interest in disease and death. opposite healthy
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adverb She eats too unhealthily. He was unhealthily obsessed with past events.
See the Oxford Advanced Learner's Dictionary entry: unhealthy