expression, i-adjective
deep-seated; deep-rooted; ingrained
Used for problems, causes, or feelings that are deeply rooted and not superficial. Often implies a long-standing or fundamental issue.
See also: 根深い
この問題は根が深いので、すぐには解決できない。
This problem is deep-rooted, so it cannot be solved right away.
彼の不信感は根が深く、簡単には消えない。
His distrust is deeply ingrained and won't disappear easily.