後輩

• 読み: こうはい
• ローマ字: kōhai
• 漢字の分解: 後 (after/behind) + 輩 (companion/colleague) → one who came after; junior
• 発音: /koː.ha.i/

意味

A junior student, underclassman, or someone less experienced in a shared context like school, work, or a club.

後輩 is the counterpart to 先輩 in Japan's hierarchical social system. As a 後輩, you're expected to use polite language, show deference, pour drinks first, and learn from those above you. While the dynamic can feel restrictive, being a 後輩 also means receiving guidance, mentorship, and protection from 先輩. The relationship evolves over time — today's 後輩 becomes tomorrow's 先輩.

例文

1. 後輩が入ってきたから、しっかり先輩らしくしないと。
2. 後輩に慕われる先輩になりたいな。
3. 後輩の面倒見るのって大変だけど、自分も成長するよね。

使い方ガイド

場面: school, work, clubs, daily life

トーン: affectionate, mentoring

正しい言い方

• 後輩にはちゃんと教えてあげるのが先輩の役目だよ。 (Teaching your juniors properly is a senior's responsibility.)
• かわいい後輩が入ってきたから部活が楽しくなった。 (A cute junior joined, so club activities got more fun.)

避ける言い方

• 後輩に対して威張りすぎるとパワハラになる (Being too bossy toward juniors can cross into power harassment)

よくある間違い

• Treating the 先輩/後輩 dynamic as purely negative — many Japanese people value the mentorship and bonds formed through this system

起源と歴史

From 後 (after/behind) + 輩 (companion/group). Together with 先輩, it forms one of the core social relationship pairs in Japanese culture, rooted in Confucian values of respect for seniority.

文化的背景

時代: Centuries-old concept, always current

世代: All ages

社会的背景: Universal in Japanese society

地域メモ: Used across all of Japan. Less well-known internationally than 先輩 but equally important in Japanese social dynamics.