骨ナチュ

• Reading: こつナチュ
• Romaji: kotsu nachu
• Kanji breakdown: 骨 (bone) + ナチュ (natural, abbreviation) → natural bone type
• Pronunciation: /ko.tsɯ na.tɕɯ/

Meaning

Natural body-frame type in bone structure diagnosis; characterised by a long, angular frame with prominent joints.

骨ナチュ is the natural type in the 骨格診断 system, characterised by a longer frame, prominent joints (knees, wrists, knuckles), and a more angular body line. This type is advised to wear loose, relaxed, natural-fabric pieces — oversized knits, linen, wide pants, and layered looks. 骨ナチュ people are said to look great in casual and effortless styles, which has made this type very popular among those who favour a relaxed aesthetic.

Examples

1. 骨ナチュだからゆるっとしたコーデが一番しっくりくる。 I'm a natural type so relaxed, loose outfits feel the most right on me.
2. 骨ナチュの友達はリネンシャツ着るだけでおしゃれに見える。 My natural-type friend looks effortlessly stylish just wearing a linen shirt.
3. 骨ナチュ向けのアクセはゴツめのが似合うらしい。 Apparently chunky, bold accessories suit natural types best.

Usage Guide

Context: fashion, beauty, self-diagnosis, social media

Tone: analytical, informational

Do Say

• 骨ナチュだからオーバーサイズが得意でラッキー。 (I'm natural type so I'm lucky that oversized suits me.)
• 骨ナチュさんは天然素材のアイテム似合うよね。 (Natural types suit items made from natural fabrics, right?)

Don't Say

• 「骨ナチュってゴツいよね」は傷つく (Saying 'natural types are bulky' is hurtful)

Common Mistakes

• Assuming 骨ナチュ means a 'natural look' in terms of makeup or lifestyle — it strictly refers to skeletal body proportions

Origin & History

Abbreviation of 骨格ナチュラル (kokkaku nachuraru, natural skeletal type). The third type in the 骨格診断 system. Like the other types, it became mainstream through social media around 2019-2020.

Cultural Context

Era: 2010s system, mainstream from 2019-2020

Generation: Women in their 20s-40s primarily

Social background: Fashion-conscious consumers

Regional notes: Used across Japan. The 'natural' type is particularly popular among those who favour a casual, effortless fashion aesthetic.