a.

1. 嚴肅的；莊重的；莊嚴的
   He was very solemn and refrained from talking.

   他很嚴肅，沉默寡言。

2. 隆重的；鄭重的
   He made a solemn promise to do better.

   他鄭重保證要做得更好。

   The inauguration was a solemn event.

   就職典禮是一件隆重的大事。

3. 嚴重的，嚴正的
   The government made a solemn statement.

   政府發表了一項嚴正的聲明。

4. 正式的；神聖的，宗教上的
   The President took the solemn oath of office.

   總統正式宣誓就職。

adj.

1. formal and dignified:
   a solemn procession.
2. not cheerful; serious.
3. deeply sincere.