Something that is horrendous is very unpleasant or shocking.
例句
He described it as the most horrendous experience of his life...他形容這是自己一生中最可怕的經歷。The violence used was horrendous.所使用的暴力駭人聽聞。
ADJ-GRADED
（數量、程度等）大得驚人的，極其過分的
Some people use horrendous to describe something that is so big or great that they find it extremely unpleasant.
例句
Nor do their debts looks so horrendous when related to the value of their fixed assets.如果和他們的固定資產值相比，他們的債務看起來也并不算驚人。...the usually horrendous traffic jams.常常糟糕透頂的交通堵塞
英漢詞典釋義
adj.
可怕的, 恐怖的
What horrendous weather!多么討厭的天氣！
極討厭的
What horrendous weather!多么討厭的天氣！
英英詞典釋義
Adjective
1. causing fear or dread or terror;
"the awful war""an awful risk""dire news""a career or vengeance so direful that London was shocked""the dread presence of the headmaster""polio is no longer the dreaded disease it once was""a dreadful storm""a fearful howling""horrendous explosions shook the city""a terrible curse"