形容词

1. 可能致病的；不健康的
    Something that is unhealthy is likely to cause illness or poor health.

2. 不舒服的；身体不适的
    If you are unhealthy, you are not very fit or well.

3. （经济体或公司）状况不佳的，面临财务危机的
    An unhealthy economy or company is financially weak and unsuccessful.

4. （行为或爱好）不正常的，病态的
    If you describe someone's behaviour or interests as unhealthy, you do not consider them to be normal and think they may involve mental problems.

1. not conducive to good health

    e.g. an unhealthy diet of fast foods
           an unhealthy climate

2. not in or exhibiting good health in body or mind

    e.g. unhealthy ulcers

3. detrimental to health

    Synonym: insalubriousunhealthful