持じ説せつ

noun

one's cherished opinion; one's pet theory

Refers to a personal opinion or theory that one holds firmly, often with a nuance of attachment or stubbornness. Used in formal or written contexts.

• 彼かれは自じ分ぶんの持じ説せつを決けっして曲まげない。

  He never budges from his cherished opinion.

• その学がく者しゃは