積習難改;稟性難移;執拗
牛津電影裡 100%
to have habits or opinions that you have had for a long time and that you do not want to change
I'm old and set in my ways.
You should. Put your stamp on it. I'm not set in my ways.
釋義來自《牛津高階英漢雙解詞典》第 9 版