理り解かいしがたい

expression

hard to understand; incomprehensible

Used when something is difficult to comprehend or accept logically; often implies that the matter is baffling or unreasonable.

• 彼かれの行こう動どうは理り解かいしがたい。

  His behavior is hard to understand.

• その決けっ定ていは多おおくの人ひとにとって理り解かいしがたいものだった。

  That decision was incomprehensible to many people.