1590s, "injurious to health," from un- (1) "not" + healthy (adj.). Earlier unhealthsome (1540s), unhealthful (1570s). Of persons, "sickly," it is attested from 1610s. Related: Unhealthily.
实用例句
1. This government has developed an unhealthy obsession with secrecy.
本届政府在保密方面做过了头。
来自柯林斯例句
2. They looked pale and unhealthy, with unwashed hair and sunken cheeks.
他们脸色苍白，精神不振，头发脏乱，两颊深陷。
来自柯林斯例句
3. He worked in the notoriously unhealthy environment of a coal mine.
他在一个环境出了名恶劣的煤矿里工作。
来自柯林斯例句
4. Avoid unhealthy foods such as hamburger and chips.
