再 — again / re-

Grade 5さい, ふたた

Radical ⼌ · radical 13 The building block this kanji is filed under

再 (readings: さい, ふたた; Japanese kanji) means “again / re-”. It is a Grade 5 Kyōiku kanji, taught in year 5 of Japanese elementary school, and appears in words such as 再生 (regeneration).

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What does 再 mean?

Full details, readings & example

Kanji	再
Meaning	again / re-
Readings	さい, ふたた
Grade	Grade 5 (Hard)
Curriculum	Kyōiku kanji · Japanese elementary school
Example	再生 (regeneration)

How to read 再

再 is read さい or ふたた depending on the word.

Words with 再

再建さいけんtái thiết
再会さいかいgặp lại
再利用さいりようtái sử dụng
再生tái sinh

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Updated: 2026-08-09