Quick answer
歯 is the kanji for "Tooth". The most common reading is よわい (yowai). Mnemonics and example sentences are listed below.
Meaning
Tooth
Also : Cog · Gear · Teeth
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Readings
kun = Japanese reading · on = Chinese reading
Practice writing
Trace the kanji stroke by stroke with a visual guide.
Stroke Order
12 strokes
Radicals
Memory Aid
The kanji 歯 represents 'TOOTH'. Think of this shape as a picture representing the concept of tooth.
On-reading: し — remember this sound by associating it with tooth. Kun-reading: よわい.
Example Sentences
歯ブラシを新しいものに替えて丁寧に磨いた。
はぶらしをあたらしいものにかえてていねいにみがいた。
I replaced my toothbrush with a new one and brushed carefully.
歯医者で虫歯の治療をしてもらった。
はいしゃでむしばのちりょうをしてもらった。
I had my cavity treated at the dentist.
Vocabulary using 歯
Grammar to study at this level
- [Verb dictionary/nai form] + ように～ように (you ni) - So that
- [Verb dictionary form] + ことにする～ことにする (koto ni suru) - Decide to
- [Verb dictionary form] + ことになる～ことになる (koto ni naru) - It has been decided that
- [Noun/Verb te-form] + ばかり～ばかり (bakari) - Only / Nothing but
- [Verb/Adjective plain form] + はずだ～はずだ (hazu da) - Should be / It is expected
Last updated Jun 18, 2026
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