noun
one's heart; inner thoughts; true feelings
Refers to what one truly thinks or feels inside, often contrasted with outward expression. Common in phrases like 心中を明かす (to reveal one's true feelings) or 心中察する (to sympathize with someone's feelings).
彼はなかなか心中を明かさない。
He rarely reveals his true feelings.
ご心中お察しします。
I sympathize with your feelings.