根深蒂固 (gēn shēn dì gù): รากลึก (ปัญหา ฯลฯ)

This traditional concept is already deep-rooted and very difficult to change.

Corruption is deep-rooted in some places and requires long-term governance.

His prejudice is deep-rooted, and he is not easy to accept new things.

Gender discrimination is deep-rooted in many cultures, and eliminating it takes time.

This deep-rooted custom has been passed down for hundreds of years.