Translation guide
The English word "bosom" has several distinct meanings, from the literal chest area to figurative closeness. This guide covers natural Japanese expressions for each use.
Referring to the front of the upper body, especially a woman's breasts, often in a poetic or old-fashioned way.
The most common and neutral word for chest or breast. Can be used for both men and women, and in literal and figurative senses.
彼女は赤ちゃんを胸に抱いた。
She held the baby to her bosom.
Specifically means breasts (female). More anatomical or formal than 胸.
その彫像は豊かな乳房を持っていた。
The statue had a full bosom.
Refers to the inside of the chest area, like the space inside a kimono or coat. Can be used poetically for bosom.
彼はふところに手紙を隠した。
He hid the letter in his bosom.
The seat of deep feelings, secrets, or affection.
Just like the literal meaning, 胸 is the standard word for the figurative heart or inner feelings.
彼の言葉が胸に響いた。
His words touched my bosom (heart).
胸の内を明かす。
To reveal what is in one's bosom.
Means heart or mind. Often used in similar figurative contexts, though less directly tied to the chest.
Literally 'inside the chest', used for one's true feelings or thoughts. More literary.
Being in the bosom of a family, group, or nature; a place of comfort and belonging.
A poetic pattern meaning 'embraced in the bosom of ~'. Used for nature, family, etc.
自然の胸に抱かれて暮らす。
To live in the bosom of nature.
Literally 'at the family's place', meaning in the bosom of one's family. More natural than a direct translation.
彼は家族の元で育った。
He grew up in the bosom of his family.
Means 'warm home', often used to convey the sense of a loving, bosom-like environment.
彼女は温かい家庭に恵まれた。
She was blessed with a bosom (loving) family.
A friend so close they are like family or a confidant.
The standard word for a close or best friend. Equivalent to 'bosom friend'.
彼は私の親友です。
He is my bosom friend.
Literally 'a friend to whom you can open your heart'. Captures the intimacy of a bosom friend.
彼女は心を許せる友だ。
She is a bosom friend.
Idiom meaning 'a friend you can talk to frankly'. Very close, like a bosom buddy.
彼とは腹を割って話せる仲だ。
We are bosom friends who can talk about anything.
In modern English, 'bosom' can sound old-fashioned or poetic. In Japanese, 胸 (むね) is the standard word for chest and is not old-fashioned. However, using 乳房 (ちぶさ) for 'bosom' in the sense of breasts is very direct and anatomical; use 胸 instead unless you need to be specific.
Many figurative uses of 'bosom' (heart, emotions, inner feelings) map naturally to 胸 (むね) in Japanese. Phrases like 胸に秘める (keep in one's bosom) or 胸が痛む (one's bosom aches) are common.
To keep it deep in one's bosom.
胸中を察する。
To understand what is in someone's bosom.