appalling

1、ap- "to" + pall- + -ing.
2、因为惊骇、胆寒而吓得苍白。
3、appall appal.
4、备注：因为词根的原型是双l.

appalling (adj.)

1620s, present participle adjective from appall. Colloquial weakened sense of "distasteful" is attested from 1919.

1. They have been living under the most appalling conditions for two months.

他们已经在恶劣不堪的条件下生活两个月了。

2. The prospect of waiting around just twiddling his thumbs was appalling.

想到将要无所事事，他就非常害怕。

3. Helicopters fly in appalling weather to succour shipwrecked mariners.

直升机在恶劣的天气条件下起飞前去援救遇难的船员。

4. They were truly appalling.

他们非常令人震惊。

5. Rebellions were put down with appalling barbarity.

叛变被残酷地镇压了下去。

【appalling, afraid, frightful, terrible, terrific, fearful, horrible, dreadful, awful】
这组词都有“害怕的、可怕的”的意思，其区别是：
appalling: 指既令害怕又使人惊异、胆寒。
afraid: 指由于胆小或怯懦而不敢说或做某事。
frightful: 指使人陷入短暂的惊恐或产生毛骨悚然的感觉。
terrible: 侧重指给人以长久的惊骇，极端的恐怖，令人难以忍受。
terrific: 多指外表、形状或力量等的可怕。
fearful: 普通用词，既指外界情况变化而引起的恐惧，又指来自内心的害怕与焦虑。
horrible: 指因骇人听闻的丑恶而令人毛骨悚然，着重厌恶的成分多于害怕。
dreadful: 指使人非常恐惧，毛骨悚然，也使人感到讨厌而退缩。
awful: 指威严得令人害怕或敬畏，有一定的感情色彩。