根ね強づよい

i-adjective

deep-rooted; firmly established; persistent

Describes beliefs, customs, habits, or feelings that are strongly held and not easily changed. Often used for long-standing social attitudes or persistent problems.

• この地ち域いきには古ふるくからの習しゅう慣かんが根ね強づよく残のこっている。

  Old customs remain deeply rooted in this region.