s extremely alarming
a. 梦魇似的, 可怕的, 经常使人恐惧的
1. The movie was so nightmarish that I couldn't sleep afterwards.
这部电影非常可怕，以至于我之后无法入睡。
2. She described her nightmarish experience during the storm.
她描述了暴风雨期间的可怕经历。
3. His nightmarish dreams made him afraid to go to bed.
他可怕的梦让他害怕上床睡觉。