Both verbs concern correcting or restoring, but focus on different parts of the event.

The idea

直す is transitive: a person fixes something, marked with を. 直る is intransitive: the thing marked with が returns to its proper state. For example, 自転車を直しました reports the repair; 自転車が直りました reports the result.

Patterns to compare
FormExample
直なおす自転車じてんしゃを直なおします
直なおる自転車じてんしゃが直なおります

Examples

  • 私わたしは自転車じてんしゃを直なおしました。I fixed the bicycle.
  • 自転車じてんしゃが直なおりました。The bicycle was fixed.
  • 父ちちが時計とけいを直なおします。My father will fix the clock.
  • 時計とけいはもう直なおりました。The clock is fixed already.
  • 間違まちがいを直なおしてください。Please correct the mistake.
  • この癖くせはなかなか直なおりません。This habit is hard to change.

Read-aloud uses a synthetic Japanese voice available on your device. Voice quality and availability vary; it does not assess your pronunciation.

Watch out

直る does not say that the thing repaired itself; someone may have fixed it. It is not the passive 直される. The pair also applies to mistakes and habits.

Try it yourself

  1. 私わたしは自転車じてんしゃを__。(直なおしました/直なおりました)

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    直しました

    直しました goes with 自転車を: the speaker repaired the bicycle.

  2. 時計とけいが__。(直なおしました/直なおりました)

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    直りました

    直りました describes the clock returning to working order, with 時計が as subject.

  3. 間違まちがいを__ください。(直なおして/直なおって)

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    直して

    直して is the て-form of transitive 直す; it completes the request to correct the mistake.

Use it today

Describe who repaired an object, then say that it is fixed. Choose the forms in the three sentences.