a.

1. 不洁的，肮脏的
   unclean water

   不干净的水

2. 不贞洁；不纯洁；猥亵的；邪恶的
   In ancient times lepers were thought unclean.

   在古时候麻疯病人被视为邪恶的。

3. （宗教仪式上）不洁净的

adj.

1. dirty.
2. immoral.
3. ritually impure and unfit for use or consumption.
   ▸(in biblical use, of a spirit) evil.