a.

1. 可怕的
   I heard a fearful explosion.

   我听到一声可怕的爆炸。

2. 害怕的；担心的[F][（+of）][+（that）]
   They were fearful that the river would flood.

   他们担心河水泛滥。

   We were fearful of losing our way in the forest.

   我们担心在森林里迷路。

   He was fearful of her anger.

   他怕她生气。

3. 【口】非常的；严重的
   What a fearful mess!

   简直一团糟！

adj.

1. showing or causing fear.
2. informal very great.