背・脊|せいsei[1]atamadaka (head-high)

1. nounheight; stature

• Synonym背丈せたけNeutralHeight or stature, as in 「背丈が伸びる」. 「背」 is the more colloquial choice, as in 「背が高い」.
• Synonym上背うわぜいNeutralHeight or build, often in sports assessments, as in 「上背がある」. Less common than 「背」.
• Synonym身の丈みのたけNeutralA person's height, but often figurative for one's ability or proper limits, as in 「身の丈に合った生活」.
• Related身長しんちょうNeutralHeight as measured, common in checkups and forms; also 「身長が伸びる」. 「背」 is more colloquial, as in 「背が高い」.

Talk casually about being tall or short with 「背」, as in 「背が高い」. Use 「身長」 for measured height in formal settings like forms and checkups. 「背丈」 also means height; 「身の丈」 often means one's means or limits.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 背中せなか。胴どうの後ろ側うしろがわのうち、腰こしより頭あたまに近ちかい部分ぶぶん。胸むねと腹はらの反対はんたい側がわ。
2. ものを人ひとや動物どうぶつ（の胴どう）に見立みたてたときの背中せなかに当あたる部分ぶぶん。刃はの切きれない方ほうの縁えん。
3. 服ふくや道具どうぐの中なかで、人ひとの背中せなかに接せっする部分ぶぶん。
4. 身長しんちょう。