胸むな先さき三さん寸ずん

noun

one's mind; one's inner feelings; how someone feels about it

Idiomatic expression referring to a person's true thoughts or feelings, often used when a decision or outcome depends on someone's personal sentiment. Literally 'three sun in front of the chest'.

• 最さい終しゅう的てきな判はん断だんは彼かれの胸むな先さき三さん寸ずんだ。

  The final decision depends on what he really thinks.

• 相あい手ての胸むな先さき三さん寸ずんを読よむのは難むずかしい。

  It's hard to read what the other person is truly feeling.