Meet 弟 in everyday words: its meaning here is younger brother. Learn each word with its own reading.
The idea
弟 has 7 strokes. Follow the linked stroke-order diagram. 弟 is read おとうと and means one’s younger brother; 弟さん is read おとうとさん and means someone’s younger brother. 兄弟 is read きょうだい: siblings.
| Japanese word | Reading | Meaning |
|---|---|---|
| 弟 | おとうと | one’s younger brother |
| 弟さん | おとうとさん | someone’s younger brother |
| 兄弟 | きょうだい | siblings |
Examples
- 弟は学生です。My younger brother is a student.
- 弟は毎朝コーヒーを飲みます。My younger brother drinks coffee every morning.
- 弟は東京に住んでいます。My younger brother lives in Tokyo.
- 弟と公園へ行きます。I go to the park with my younger brother.
- 弟は魚が好きです。My younger brother likes fish.
- 弟さんは学生ですか。Is your younger brother a student?
- 兄弟と晩ご飯を食べます。I eat dinner with my siblings.
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
Compare 弟 with 第; notice their different parts and strokes rather than guessing from the overall shape. When speaking to someone outside your family, use 弟 for your own younger brother; 弟さん is a respectful way to refer to someone else’s younger brother. 兄弟 can refer to siblings of any gender, not only brothers.
Try it yourself
Write the reading of 弟 in hiragana.
Show answer or example answer
おとうと
弟 is read おとうと; it means one’s younger brother. Remember the reading with the whole word.
Write the reading of 弟さん in hiragana.
Show answer or example answer
おとうとさん
弟さん is read おとうとさん; it means someone’s younger brother. Remember the reading with the whole word.
Write きょうだい in kanji for “siblings”.
Show answer or example answer
兄弟
兄弟 is written with 弟 and read きょうだい; it means siblings.
Practice round
Answer questions, then rebuild Japanese sentences where available. We keep your score.
Write the reading of 弟 in hiragana.
Write the reading of 弟さん in hiragana.
Write きょうだい in kanji for “siblings”.
Tap the words in the right order.
Tap the words in the right order.
Tap the words in the right order.
Keep your progress
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Write 弟 three times using the linked stroke order. Cover the table, read 弟 and 弟さん, and make a sentence with one of them.

