恐[kǒng] 基本解释：
新英汉大词典：
- 恐[kǒng]
- 动词- （害怕; 畏惧） fear; dread; be afraid:
be alarmed;惊恐
With someone at his back, he does not fear anything.; feel reassured and emboldened有恃无恐
- （使害怕） terrify; intimidate; threaten; terrorize:threaten; intimidate恐吓
- 副词- （恐怕） I'm afraid:
I'm afraid it was not the original intent.恐非原意。
There may be some other reason for it.恐另有原因。
以上内容来源于：《新汉英大辞典》
例句与用法：
He frightened the old man into giving him all the money.
I'm afraid he is getting steadily worse.
I'm afraid that the performance was not a total success.
I'm afraid we're in for a storm.
I'm afraid I haven't got a very good sense of directions, so I easily get lost.
I'm afraid this old radio is beyond repair.
I'm afraid I have to leave.
恐的其他解释: