The root or source of something; the origin or starting point, often referring to a cause.
その論文は問題の根本を探っている。
The paper investigates the root of the problem.
原因の根本を見つけなければ、同じミスを繰り返すだろう。
If you don't find the fundamental cause, you'll likely repeat the same mistakes.
彼の考え方は恐怖心が根本にあるようだ。
It seems his way of thinking has fear at its root.
The foundation, basis, or essence of something; what underlies appearances.
会社経営の根本は顧客満足にある。
The foundation of running a company lies in customer satisfaction.
教育の根本に立ち返って議論する必要がある。
We need to return to the fundamentals of education and discuss from there.
議論がかみ合わないのは、根本の価値観が違うからだ。
The debate doesn't align because the underlying values are different.