Meaning
書 holds two meanings that feed into each other: to write and a book or document. Writing produces books. Books are writing made permanent. The character captures both sides at once.
The form comes from oracle bone script, where it showed a hand gripping a brush above a writing surface. In the modern kanji, the top component (聿) is that hand with its brush; the bottom (曰) is the tablet beneath it. You can read the whole act of writing in the shape.
At 10 strokes, 書 is taught in Grade 2 of Japanese elementary school. It turns up everywhere: libraries, calligraphy studios, letters, dictionaries, bookstores, official paperwork.
Vietnamese speakers already know this character through sound. 書 reads as THƯ in Sino-Vietnamese: thư viện (library, from 書院), thư ký (secretary, from 書記), thư pháp (calligraphy, from 書法). Japanese and Vietnamese inherited this vocabulary from Classical Chinese — the connections are real, not coincidental.
Readings
On'yomi (音読み) — Chinese-derived readings
The on'yomi ショ (sho) traces back to Middle Chinese. It appears in compound nouns (jukugo), especially those involving documents, formal writing, and written culture.
- 図書館 (toshokan) — library (lit. "hall of books and maps")
- 書道 (shodō) — calligraphy (lit. "the way of writing")
- 辞書 (jisho) — dictionary (lit. "book of words")
- 書類 (shorui) — documents, paperwork
- 読書 (dokusho) — reading (books)
Kun'yomi (訓読み) — Native Japanese readings
The kun'yomi か.く (kaku) is the native verb meaning "to write." The dot marks where the conjugating ending begins — か is the fixed stem, く changes form. Use this reading when 書 stands alone as a verb or anchors a verb compound.
- 書く (kaku) — to write
- 書き方 (kakikata) — way of writing, penmanship
- 手書き (tegaki) — handwritten, by hand
- 書き直す (kakinaosu) — to rewrite, to revise
Common Words & Compounds
書 combines readily with other kanji across a wide range of contexts. Here are the most useful compounds, grouped by theme.
Books and Reading:
- 図書館 (toshokan) — library
- 図書 (tosho) — books, library books
- 読書 (dokusho) — reading (as a hobby or activity)
- 書店 (shoten) — bookstore
Writing and Documents:
- 書類 (shorui) — documents, paperwork
- 教科書 (kyōkasho) — textbook
- 辞書 (jisho) — dictionary
- 手紙 (tegami) — letter
- 書状 (shojō) — formal written correspondence
- 報告書 (hōkokusho) — written report
Calligraphy and Art:
- 書道 (shodō) — calligraphy, "the way of writing"
- 書家 (shoka) — calligrapher, master of calligraphy
- 楷書 (kaisho) — regular script (calligraphy style)
- 草書 (sōsho) — cursive script (calligraphy style)
Everyday Writing:
- 書き方 (kakikata) — way of writing, penmanship
- 手書き (tegaki) — handwritten, by hand
- 書き直す (kakinaosu) — to rewrite, correct in writing
Example Sentences
毎日、日記を書いています。
Mainichi, nikki wo kaite imasu.
I write in my diary every day.
名前をここに書いてください。
Namae wo koko ni kaite kudasai.
Please write your name here.
図書館で本を借りました。
Toshokan de hon wo karimashita.
I borrowed a book from the library.
彼女は書道がとても上手です。
Kanojo wa shodō ga totemo jōzu desu.
She is very skilled at calligraphy.
教科書に答えが書いてあります。
Kyōkasho ni kotae ga kaite arimasu.
The answer is written in the textbook.
友達に手紙を書きました。
Tomodachi ni tegami wo kakimashita.
I wrote a letter to my friend.
この辞書はとても使いやすいです。
Kono jisho wa totemo tsukai yasui desu.
This dictionary is very easy to use.
黒板に先生が漢字を書きました。
Kokuban ni sensei ga kanji wo kakimashita.
The teacher wrote kanji on the blackboard.
読書は私の趣味の一つです。
Dokusho wa watashi no shumi no hitotsu desu.
Reading is one of my hobbies.
Related Kanji
- 時 — Time, Hour (Kanji N5)
- 気 — Spirit, Energy, Air (Kanji N5)
- 今 — Now, Present (Kanji N5)
- 万 — Ten Thousand (Kanji N5)
- 六 — Six (Kanji N5)
- 買 — Buy, Purchase (Kanji N5)
Memory Tip
Picture a calligrapher at a desk, brush in hand. The top of 書 (聿) looks like fingers gripping that brush, bristles pointing down. The bottom (曰) is the flat tablet waiting beneath it.
書道 (shodō) is the best anchor. It means "the way of writing" and refers to Japanese calligraphy — watching a calligrapher work makes the character stick. Brush strokes surface. Writing happens. A book is just that act, repeated and bound.
Vietnamese learners can reinforce this with thư viện — the library you already know. THƯ is the sound; 書 is the character behind it.