one's heart; one's mind; one's bosom
Literary word for one's inner thoughts, feelings, or heart. Not used in everyday conversation; appears in written language, poetry, or formal contexts.
The thoughts passing through his mind were complicated.
Those words were deeply engraved in my heart.
Standard kanji form for this literary word.
Variant kanji form; 裡 is an older form of 裏.
Compound of 胸 (chest, heart) and 裏 (inside, back), literally 'inside the chest'. The exact historical derivation is uncertain, but the word has been used in literary Japanese to refer to one's inner thoughts and feelings.