背中（せなか、senaka）
- back

The Japanese word 背中 せなか refers to the "back" of the body, specifically the area from the shoulders to the lower back. It encompasses the entire dorsal surface of the torso.

⚫︎背中が痒い。 Translation: My back itches. ⚫︎友達は私の背中を叩いた。 Translation: My friend patted my back. ⚫︎赤ちゃんは母親の背中で眠っている。 Translation: The baby is sleeping on the mother's back.

背中 is used in a variety of contexts, from describing physical sensations like pain or itching, to actions like patting or carrying something on one's back. It is a common and versatile word.

⚫︎The word 背中 is typically written using the kanji 背 (se - meaning "back" or "behind") and the hiragana 中 (naka - meaning "inside" or "middle"). The reading is せなか in hiragana. ⚫︎There are no other common ways to write this word. The okurigana is standard.

There aren't direct, one-word synonyms for 背中 that completely replace it. However, related terms could include: ⚫︎後ろ (ushiro) - "behind", "back" (can refer to the back side, but is more general) ⚫︎背部 (haibu) - "dorsal region" (more formal/medical term)

⚫︎The direct antonym would be the front of the body, which can be described with words like: ⚫︎前 (mae) - "front" ⚫︎お腹 (onaka) - "stomach" (more specific to the abdominal area)

彼は試合中、足を痛めて、地面に倒れて《背中を打った。》 ・Translation: He hurt his leg during the match and fell to the ground, hitting his back. ・Explanation: This sentence describes an action (falling) and the body part affected (the 背中).

重い荷物を運んだので、《背中が痛くなった。》 ・Translation: My back started to hurt because I carried a heavy load. ・Explanation: This sentence explains a cause and effect relationship, the heavy load causing back pain.

The word 背中 is composed of two kanji: 背 (se), which originally meant "the back" or "spine", and 中 (naka), which means "inside" or "middle". The combination of these two characters creates the compound word, indicating the "middle part of the back". The use of 背 in this context is older than the use of 背 as "height".