禍か根こん

noun

root of evil; source of trouble; cause of misfortune

Refers to the underlying cause or origin of a problem, often with a nuance of something that will lead to future trouble if not addressed. Common in formal or written contexts.

• その政せい策さくは将しょう来らいの禍か根こんを残のこすことになった。

  That policy ended up leaving the seeds of future trouble.

• 禍か根こんを断たつために、抜ばっ本ぽん的てきな改かい革かくが必ひつ要ようだ。

  To eliminate the root of the problem, fundamental reform is necessary.