Explore 互 through actions and relationships shared by two sides. Learn each reading with a complete word.
The idea
互 has four strokes. 互い(たがい) means each other: 互いに modifies an action, while 互いの modifies a noun. 相互(そうご) is a more formal word for mutual relations, as in 相互理解.
| Word | Reading | Example |
|---|---|---|
| 互い | たがい | We help each other. |
| 相互 | そうご | Mutual understanding is important. |
Examples
- 私たちは互いに助けます。We help each other.
- 二人は互いの名前を知っています。The two know each other’s names.
- 互いに意見を聞きました。We listened to each other’s opinions.
- 互いの違いを大切にします。We value each other’s differences.
- 相互理解が大切です。Mutual understanding is important.
- 両国は相互に協力しています。The two countries cooperate with each other.
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
Do not read 互 the same way in every word: 互い is たがい, but 相互 is そうご. Mutual action involves both sides; 互いの names what belongs to each side.
Try it yourself
Write the reading of 互い in hiragana.
Show answer or example answer
たがい
互い is たがい: 互いに助けます means we help each other.
Write the reading of 相互 in hiragana.
Show answer or example answer
そうご
相互 is そうご: 相互理解 means mutual understanding.
Choose the missing kanji: 相_(そうご)[互/五].
Show answer or example answer
互
互 completes 相互, そうご, as in 相互に協力する, to cooperate mutually.
Practice round
Answer questions, then rebuild Japanese sentences where available. We keep your score.
Write the reading of 互い in hiragana.
Write the reading of 相互 in hiragana.
Choose the missing kanji: 相_(そうご)[互/五].
Tap the words in the right order.
Tap the words in the right order.
Tap the words in the right order.
Keep your progress
Sign up for free to save your practice results in your account.
Sign up to saveI already have an accountUse it today
Write 互, cover the examples, and make one sentence with 互いに and another with 互いの.

