締 — Tighten / Tie / Shut / Lock

Master (高手)てい, し, -し, -じ

Radical ⽷ · radical 120 The building block this kanji is filed under

締 (readings: てい, し, -し, -じ; Japanese kanji) means “Tighten / Tie / Shut / Lock”. 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 締結 (conclusion of a treaty).

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What does 締 mean?

Full details, readings & example

Kanji	締
Meaning	Tighten / Tie / Shut / Lock
Readings	てい, し, -し, -じ
Grade	Master (高手 · secondary school)
Curriculum	Jōyō kanji · Japanese secondary school (JLPT N1–N2)
Example	締結 (conclusion of a treaty)

How to read 締

締 is read てい or し or -し or -じ depending on the word.

Words with 締

締結ký kết

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Updated: 2026-07-22