口伝

• Reading: くでん
• Romaji: kuden
• Kanji breakdown: 口 (ku) — mouth, oral; 伝 (den) — transmit, tradition, pass down
• Pronunciation: /kɯ.deɴ/

Meaning

Oral tradition; oral instruction; knowledge, technique, or lore transmitted verbally from teacher to student across generations.

A noun for the practice of passing down knowledge exclusively through spoken instruction, without written documentation. In Japanese martial arts (武道), performing arts (能, 茶道), and religious traditions (密教), the most essential secrets were deliberately withheld from written texts and conveyed only in person. 口伝 thus implies both secrecy and intimacy in the teacher-student relationship. The term also refers to the body of knowledge so transmitted.

Examples

1. 武道の奥義は文書ではなく口伝によって師から弟子へと受け継がれた。 The secret techniques of martial arts were passed down from master to disciple through oral tradition, not written texts.
2. 口伝でしか伝わらない技術は、後継者がいなくなると失われてしまう危険がある。 Techniques that are transmitted only through oral instruction risk being lost when there are no successors.
3. 民俗学者は各地で口伝を採集し、消えかけた文化を記録した。 The folklorist collected oral traditions from various regions and documented cultures on the verge of disappearing.

Usage Guide

Context: folklore, martial arts, performing arts, religious tradition

Tone: scholarly

Origin & History

Sino-Japanese compound. 口 means 'mouth, oral' and 伝 means 'transmit, pass down, tradition'. The compound thus describes transmission through the spoken word rather than the written page.

Cultural Context

Era: Classical–Modern

Generation: Adults

Social background: Traditional/Cultural