a.

1. 众所周知的；熟悉的；常见的；普通的[（+to）]
   Your face seems familiar.

   你看上去很面熟。

2. （某人）熟悉（某事）的，通晓……的[F][（+with）]
   I am of course familiar with your work.

   我当然熟悉你的工作。

3. 亲近的，亲密的[（+with）]
   She wrote in a familiar style.

   她用亲切的笔调写作。

4. 冒昧的；放肆的[（+with）]
5. 不拘形式的；随便的

n.[C]

1. （传说中供女巫等使唤的）妖精
2. 知交；伴侣

adj.

1. well known from long or close association.
   ▸common; usual.
2. (familiar with) having a good knowledge of.
3. in close friendship.
   ▸inappropriately intimate or informal.

n.

1. (also familiar spirit) a demon supposedly attending and obeying a witch.
2. a close friend or associate.
3. (in the Roman Catholic Church) a person rendering certain services in a pope's or bishop's household.