deathly

形容词 deathly:

1. having the physical appearance of death
   同义词：deathlike
2. causing or capable of causing death
   同义词：deadly, mortal

副词 deathly:

1. in the manner of death

1. He went/turned deathly pale at the news.
   他得知这一消息後，吓得面如土色。

death.ly

adj.（形容词）
Of, resembling, or characteristic of death:
死亡的，死一般的：
例句：
a deathly silence.
死一般的寂静

Causing death; fatal.
致死的；致命的
adv.（副词）
In the manner of death.
以死亡的方式
Extremely; very:
极其；非常：
例句：
The night was deathly cold.
夜晚很冷