"非常讨厌" 英文可以说作 "hate very much" 或 "despise"。
"hate" 是英语中最常用的词汇之一，意思是 "憎恨"，"讨厌"。例如：
I hate math. (我讨厌数学。)
I can't stand him, I hate him. (我不能忍受他，我讨厌他。)
"despise" 是英语中另一种表示 "非常讨厌" 的词汇，意思是 "鄙视"，"蔑视"。例如：
He despises people who are dishonest. (他鄙视不诚实的人。)
I despise anyone who would cheat on their partner. (我鄙视任何背叛伴侣的人。)