捉とらえどころ

noun

key to understanding; point of an argument; something to grasp

Often used in the negative phrase とらえどころのない to describe someone or something vague, elusive, or hard to pin down. The affirmative use is less common.

See also: とらえどころのない

• 彼かれの話はなしはとらえどころがなくて、何なにが言いいたいのかわからなかった。

  His story was so vague that I couldn't tell what he wanted to say.

• あの人ひとはとらえどころのない性せい格かくだ。

  That person has an elusive personality.