vi.

1. 欣喜，高兴[（+at/over）][+to-v][+that]
   I rejoice to hear of your promotion.

   听说你高升我非常高兴。

   We all rejoiced at/over the good news.

   我们都为这一消息感到高兴。

2. 庆祝，欢乐
   Let us rejoice together on your success.

   让我们共同庆祝你的成功。

vt.

1. 使高兴，使欣喜
   They will be rejoiced to see you.

   他们将非常乐于见你。

v.

1. feel or show great joy.
   ▸archaic cause joy to.
2. (rejoice in) Brit. have (a specified strange or inappropriate name):
   the guard rejoiced in the name of Blossom.