a.

1. 沉默的；寡言的；不作聲的
   He was silent for a moment.

   他沉默了一會兒。

2. 寂靜無聲的
   The old house was quite silent.

   這所老房子寂靜無聲。

3. 未說出的，未言明的[Z][B]
4. 未（作）記述的；未（被）提及的[Z][F][（+on）]
   The law is silent on this point.

   在這一點上法律無明文規定。

5. 靜止的，不活動的
6. 【語】不發音的[Z]
7. （電影）無聲的[Z][B]
8. 【醫】無症狀的[Z][B]

n.

1. 無聲電影[P]

adj.

1. not making or accompanied by any sound.
   ▸(of a film) without an accompanying soundtrack.
2. not speaking or not spoken aloud.
   ▸not prone to speak much.
3. (of a letter) written but not pronounced, e.g. b in doubt.
4. saying or recording nothing on a particular subject.