积习难改;禀性难移;执拗
牛津电影里 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.
释义来自《牛津高阶英汉双解词典》第 9 版