最さい深しん部ぶ

noun

deepest part; innermost depths

Refers to the deepest physical or metaphorical part of something, such as the ocean, a cave, a forest, or one's heart.

• その湖みずうみの最さい深しん部ぶはまだ調ちょう査さされていない。

  The deepest part of the lake has not yet been explored.

• 彼かれの心こころの最さい深しん部ぶには、誰だれにも言いえない秘ひ密みつがあった。

  In the innermost depths of his heart, there was a secret he couldn't tell anyone.