直す|なおすnaosu[2]nakadaka (mid-high)

1. godan verb, transitive verbto repair; to mend; to fix; to correct (a mistake, bad habit, etc.); to put right; to restore; to straighten (e.g. a tie); to tidy up (one's hair, make-up, etc.); to revive (one's spirits)
   いまそれを直なおそうったって無駄むだだ。↗

   It's no use trying to fix it now.

   あなたの時計とけいは明日あすまでには直なおしておきますよ。↗

   I will have repaired your watch by tomorrow.
2. godan verb, transitive verbto change; to alter; to convert; to translate
   次つぎの文章ぶんしょうを日本語にほんごに直なおしなさい。↗

   Put the following sentences into Japanese.
3. godan verb, transitive verbto put back; to put away
   その本ほんをなおしなさい。↗

   Put the book back where you found it.
4. godan verb, transitive verbto cure; to healusu. written as 治す
5. godan verb, transitive verbto move up; to promote
6. suffix, godan verbto do over again; to redoafter -masu stem of verb

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• Synonym修正しゅうせいWrittenSino-Japanese word for correcting errors or adjusting deviations, as in 「計画を修正する」. More written/formal than 「直す」.
• Synonym正すただすNeutralFor correcting mistakes or straightening one's posture, as in 「姿勢を正す」「誤りを正す」. More formal in tone than 「直す」.
• Synonym訂正ていせいWrittenWritten/formal word for correcting errors in text or data, as in 「訂正してお詫びします」. Not used for repairing things.
• Synonym補正ほせいWrittenWritten/formal word for correcting by supplementing what is lacking, as in 「補正予算」「色補正」; the emphasis is on making up for a shortfall.
• Synonym手直してなおしCasualColloquial word for reworking something already finished, on any scale, as in 「原稿を手直しする」「大幅な手直し」.
• Synonym修整しゅうせいWrittenWritten/formal word for retouching photos and the like, as in 「写真を修整する」; the emphasis is on polishing and touching up.
• Synonym矯正きょうせいWrittenWritten/formal word for correcting bad habits or physical problems, as in 「歯列矯正」; the emphasis is on straightening out a deviation.
• Synonym改正かいせいWrittenWritten/formal word for revising laws and rules, or fares and timetables, as in 「憲法改正」「ダイヤ改正」.
• Synonym改定かいていWrittenWritten/formal word for revising set prices or rules, as in 「料金改定」; the emphasis is on setting them anew.
• Synonym矯め直すためなおすNeutralFor straightening something bent or breaking a bad habit, as in 「悪い癖を矯め直す」. Comparatively rare.
• Related改めるあらためるNeutralFor changing or renewing something, as in 「規則を改める」「態度を改める」; the emphasis is on making it new.
• RelatedかいぜんNeutralFor improving something to make it better, as in 「待遇を改善する」; the emphasis is on overall improvement rather than fixing errors.
• Related匡正きょうせいFormalFormal, stiff-sounding word for correcting errors in general. For everyday corrections use 「直す」 or 「正す」.
• Antonym壊すこわすNeutralAntonym of the repair sense of 「直す」: to break or destroy something, as in 「時計を壊す」.
• Antonym乱すみだすNeutralAntonym of the tidying sense of 「直す」: to throw into disorder, as in 「列を乱す」.
• Antonym曲げるまげるNeutralAntonym of the straightening sense of 「直す」: to bend or distort, as in 「事実を曲げる」.
• Antonym傷つけるきずつけるNeutralAntonym of the repair sense of 「直す」: to injure or hurt someone, as in 「心を傷つける」.

For repairs and corrections the default is 「直す」. Use 「修正」 or 「訂正」 for fixing errors, 「正す」 for correcting, 「改正」 for revising laws and rules, 「改善」 for improvement, 「手直し」 for reworking a finished product, and 「壊す」 for breaking something.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 【直なおす】 悪わるくなった物事ものごとを良よくする。
2. 誤あやまりを正ただす。
3. 壊こわれた物ものを元もと通とおりに使つかえるようにする。
4. 乱みだれた物ものを整ととのえる。
5. (又または【納おさめす】 西日本にしにっぽん方言ほうげん)物ものを仕舞しまう、収納しゅうのうする、元もとの場所ばしょに戻もどす。片付かたづける。大阪おおさか以西いせい沖縄おきなわ以北いほくで一般的いっぱんてきに使つかわれる。
6. 【直なおす】 別べつの物事ものごとに変かえる。
7. 作り変つくりかえる。
8. 翻訳ほんやくする。
9. 換算かんさんする。
10. 【直なおす】（動詞どうしの連用形れんようけいに続つづけて）良よくするために改あらためて繰り返くりかえす。
11. 【治なおす】病びょうや傷きずから、回復かいふくさせる。治療ちりょうする。
12. （医者いしゃなどが他人たにんを）治療ちりょうする。
13. 自分じぶんで養生ようじょうを行おこなった結果けっかとして回復かいふくする。