These words all describe sth that is very unpleasant.以上各词均指事物令人不快的。
terrible very bad or unpleasant; making you feel unhappy, frightened, upset, ill, guilty or disapproving指糟透了的、非常讨厌的、令人极不快的、可怕的、骇人的：◆What terrible news!多么骇人听闻的消息！◆That's a terrible thing to say!说这话太难听了！
awful(ratherinformal) very bad or unpleasant; used to describe sth that you do not like or that makes you feel depressed, ill, guilty or disapproving指很坏的、极讨厌的（用以形容令人沮丧、不舒服、内疚或不高兴的事物）：◆That's an awful colour.那颜色难看得很。◆The weather last summer was awful.刚过去的夏季天气真糟糕。
horrible(ratherinformal) very unpleasant; used to describe sth that you do not like指极坏的、十分讨厌的（用以形容令人不快的事物）：◆The coffee tasted horrible.这咖啡难喝极了。
dreadful(ratherinformal, especiallyBrE) very bad or unpleasant; used to describe sth that you do not like or that you disapprove of指糟糕透顶的、讨厌的（用以形容令人不快或反对的事物）：◆What dreadful weather!多么讨厌的天气！
vile(informal) extremely bad or unpleasant指糟糕透顶的、可恶的、极坏的：◆There was a vile smell coming from the room.房间里传来令人恶心的气味。◆He was in a vile mood.他的心情坏极了。
horrendous(ratherinformal) extremely unpleasant and unacceptable指讨厌得难以容忍的：◆The traffic around the city was horrendous.城里的交通糟透了。
[only before noun]usedtoemphasizehowbadsthis（强调糟糕的程度）极其的，极坏的SYNterrible◆She'smakingadreadfulmessofthings. 她把事情搞得一塌糊涂。◆I'mafraidthere'sbeenadreadfulmistake. 恐怕是出了大错。[usually before noun]causingfearorsuffering可怕的；令人畏惧的；使人痛苦的SYNterrible◆adreadfulaccident可怕的事故◆Theysuffereddreadfulinjuries. 他们严重受伤。