Explore 封 through letters and packages. Learn each reading together with a complete word.
The idea
封 has 9 strokes; follow the linked stroke-order diagram. 封筒(ふうとう) means envelope, 封(ふう) a seal, 開封(かいふう) opening a sealed item, and 同封(どうふう) enclosing something with a letter.
| Word | Reading | Example in context |
|---|---|---|
| 封筒 | ふうとう | I put the letter in an envelope. |
| 封 | ふう | I sealed the box with tape. |
| 開封 | かいふう | I opened the package that arrived. |
| 同封 | どうふう | I enclosed the application form and sent it. |
Examples
- 手紙を封筒に入れました。I put the letter in an envelope.
- 封筒に切手を貼りました。I put a stamp on the envelope.
- 箱をテープで封しました。I sealed the box with tape.
- 届いた荷物を開封しました。I opened the package that arrived.
- 申込書を同封して送りました。I enclosed the application form and sent it.
- 古い手紙の封を切りました。I opened the sealed old letter.
Read-aloud uses a synthetic Japanese voice available on your device. Voice quality and availability vary; it does not assess your pronunciation.
No Japanese device voice is available. You can still read the text and use the linked listening resources.
Watch out
封 means sealing, but 開封 is the opposite action: opening something sealed. 同封 means putting something in with a letter, not sealing it.
Try it yourself
Write the reading of 封筒 in hiragana.
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ふうとう
封筒 is ふうとう, an envelope for a letter. Remember the long う in both syllables.
Write the reading of 開封 in hiragana.
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かいふう
開封 is かいふう: 開 means open, so the compound means opening a sealed item.
Choose the missing kanji: 同_(どうふう)[封/開].
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封
封 completes 同封(どうふう), enclosing something with a letter.
Practice round
Answer questions, then rebuild Japanese sentences where available. We keep your score.
Write the reading of 封筒 in hiragana.
Write the reading of 開封 in hiragana.
Choose the missing kanji: 同_(どうふう)[封/開].
Tap the words in the right order.
Tap the words in the right order.
Tap the words in the right order.
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Write 封 using the diagram. Cover the table, read 封筒 and 開封, then make a sentence with 同封.

