名词是fear; scare; dread，形容词afraid; scared; dreadful; frightened; frightful，副词dreadfully frightenedly afraidly.
awfully、dreadfully、frightfully、terribly、sadly、very、quite、hig。dreadfully：adv. 可怕地,糟透地。
一般只是用来讲事情的状况。
（比如说，这首交响乐给糟蹋得不成样子。
The symphony was dreadfully mangled。
）frightfully：非常,可怕地。
就我个人认为，这个词只能用在一个地方，I'm fright。
动词：fear; scare ; dread;形容词 ：afraid,scared,dreadful; frightened,frightful 副词：dreadfully frightenedly afraidly 名词：fear scare dread
变形：副词dreadfully，名词dreadfulness。
短语：dreadful accident〔disease, nightmare〕可怕的事故〔疾病，噩梦〕dreadful film〔meal, weather〕糟糕的电影〔饭菜，天气〕dreadful disorder〔damage〕极度混乱〔极大的破坏〕