心しん髄ずい

noun

marrow; pith; core

Refers to the innermost essential part of something, often used metaphorically for the vital core of an idea, matter, or being.

• この問もん題だいの心しん髄ずいは、信しん頼らいの欠けつ如じょにある。

  The core of this problem lies in a lack of trust.

noun

center; nucleus; hub

Used for the central point or focal area of an organization, activity, or system.

• その研けん究きゅう所じょは、この分ぶん野やの研けん究きゅうの心しん髄ずいとなっている。

  That research institute has become the hub of research in this field.

noun

bottom of one's heart; innermost feelings

Emphasizes the deepest, most sincere part of one's emotions or thoughts; often used in expressions like 心髄から (from the bottom of one's heart).

• 彼かれの言こと葉ばは心しん髄ずいからのものだった。

  His words came from the bottom of his heart.