亜 — “Asia / Rank Next / Come After / -ous” in Japanese

Master (高手)あ, つ

Radical ⼆ · radical 7 The building block this kanji is filed under

“Asia / Rank Next / Come After / -ous” in Japanese is 亜, read a, tsu (あ, つ). It is a Jōyō kanji taught in Japanese secondary school (junior & senior high) — the 高手 · Master tier beyond the grade 1–6 Kyōiku set, and appears in words such as 亜熱帯 (subtropics).

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What does 亜 mean?

Full details, readings & example

Kanji	亜
Meaning	Asia / Rank Next / Come After / -ous
Readings	あ, つ
Grade	Master (高手 · secondary school)
Curriculum	Jōyō kanji · Japanese secondary school (JLPT N1–N2)
Example	亜熱帯 (subtropics)

How to read 亜

亜 is read a (あ) or tsu (つ) depending on the word.

Words with 亜

亜熱帯

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Updated: 2026-08-28