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What is Onyomi and Kunyomi?

Published in Kanji Readings 2 mins read

Onyomi and kunyomi are the two main ways to pronounce kanji (Chinese characters) in Japanese.

Here's a breakdown of each:

Understanding Kanji Readings

Kanji characters, adopted from Chinese, have two primary types of readings: onyomi and kunyomi. Knowing the difference helps in understanding and learning Japanese vocabulary.

Reading Origin Usage Example (Kanji: 人 - person)
Onyomi Chinese pronunciation Multi-kanji compounds; often sounds more like Chinese. Jin (ex: jinbutsu - 人物 - person)
Kun'yomi Native Japanese pronunciation Single kanji words or when a kanji is followed by hiragana (Japanese script) Hito (ex: hito - 人 - person)

Onyomi (音読み): The Sino-Japanese Reading

Onyomi is the pronunciation of the kanji based on how it was originally pronounced in Chinese. According to the provided reference, there are often multiple onyomi readings for a single kanji, stemming from different Chinese provinces and dynasties.

Key characteristics of Onyomi:

  • Often used in multi-kanji compound words. According to the reference, you generally use on'yomi when a word is made up of a multi-kanji compound.
  • Tends to sound more like Chinese.
  • Categorized into different types based on which period of Chinese pronunciation it's derived from (e.g., Go-on, Kan-on, Tō-on).

Onyomi Examples

  • 学校 (gakkō) - school (学校 is a multi-kanji compound)
  • 大学 (daigaku) - university (大学 is a multi-kanji compound)

Kunyomi (訓読み): The Native Japanese Reading

Kunyomi is the native Japanese reading of a kanji, representing the meaning of the Chinese character with a corresponding Japanese word. The provided reference states that kun'yomi is the Japanese reading of kanji.

Key characteristics of Kunyomi:

  • Often used for single kanji words.
  • Often used when a kanji is followed by hiragana (Japanese phonetic script) – this hiragana part is called okurigana.
  • Represents the original Japanese word that conveyed the same meaning as the Chinese character.

Kunyomi Examples

  • 人 (hito) - person (single kanji)
  • 食べる (taberu) - to eat (食 is the kanji, べる is the okurigana in hiragana.)
  • 大きい (ōkii) - big (大 is the kanji, きい is the okurigana in hiragana.)

When to Use Onyomi vs. Kunyomi

There aren't always hard and fast rules, but here are some guidelines:

  • Multi-Kanji Words: Usually use onyomi.
  • Single Kanji Words: Often use kunyomi.
  • Kanji + Hiragana: Almost always use kunyomi.
  • Exceptions: Japanese has many exceptions, so memorization is often necessary.