微び衷ちゅう

noun

one's innermost thoughts; one's true feelings

Literary and somewhat formal; used to express one's humble, sincere inner feelings, often in written or formal contexts.

• 微び衷ちゅうを述のべる機き会かいをいただき、感かん謝しゃしております。

  I am grateful for the opportunity to express my innermost thoughts.