淵えん源げん

noun, noun or participle which takes 'suru'

origin; source; fountainhead

A formal, somewhat literary term for the deep origin or root of something, often used in academic or philosophical contexts. The する form is possible but less common.

• この思し想そうの淵えん源げんは古こ代だいギリシャにまで遡さかのぼる。

  The origin of this thought goes back to ancient Greece.

• 問もん題だいの淵えん源げんを探さぐることが解かい決けつへの第だい一いっ歩ぽだ。

  Investigating the source of the problem is the first step toward a solution.