deep–seat·ed 
/ˈdi:pˈsi:təd/ adjective
/ˈdi:pˈsi:təd/ adjective [more deep–seated; most deep–seated] : existing for a long time and very difficult to change : firmly established
▪ She has a deep-seated fear of flying. ▪ The problems are far more deep-seated [=deep-rooted] than we thought.
▪ She has a deep-seated fear of flying. ▪ The problems are far more deep-seated [=deep-rooted] than we thought.
