曰いわく言いい難がたし

expression

it is hard to explain; it is hard to say

A set phrase used when something is difficult to put into words, often because it is complex, delicate, or beyond easy description. Has a slightly literary or formal feel.

• その時ときの気き持もちは曰いわく言いい難がたしだ。

  My feelings at that time are hard to put into words.

• 彼かれの作さく品ひんの魅み力りょくは曰いわく言いい難がたし。

  The charm of his work is difficult to describe.