unhealthy

Adjective

unhealthy (comparative unhealthier or more unhealthy, superlative unhealthiest or most unhealthy)

1. Characterized by, or conducive to poor health.
   • The villagers lived in unhealthy surroundings.
   • “When left to their own devices, people who are extremely narcissistic in this unhealthy way are not going to change,” said Dr. Malkin, a lecturer at Harvard Medical School who was not involved in the research.2024 July 11, Christina Caron, “Narcissism Is a Trait That’s Hard to Shake, Study Says”, in The New York Times, archived from the original on 13 Jul 2024

   Synonyms:

   unwholesome

2. Sick or ill.
   • He was an unhealthy child.
   • ‘And at once he'll be on his high-horse – he knows everything! – and he'll prove, prove, that all unhealthy children must be lethal-chambered or the world will go to pieces.’1924, Ford Madox Ford, Some Do Not… (Parade's End), Penguin, published 2012, page 39
3. Tending to corrupt.
   • He liked unhealthy reading material.
4. Characterized by disturbed mental health.
   • He had an unhealthy interest in fire.