改正|かいせいkaisei[0]heiban (flat)

1. suru verb, transitive verb, no-adjectiverevision; amendment; alteration
   時刻表じこくひょうが改正かいせいされた。↗

   The timetable has been revised.

• Synonym修正しゅうせいNeutralFixes errors or adjusts deviations (「誤りを修正する」,「軌道修正」); covers a wide range of objects, while 「改正」 mainly revises laws, rules or timetables.
• Synonym改定かいていNeutralSets new prices or rules (「料金改定」), the point being to establish a new standard; 「改正」 focuses on fixing imperfect points.
• Synonym改めるあらためるNeutralA verb meaning to change or correct (「規則を改める」,「態度を改める」); more colloquial than 「改正」 and covering a wider range of objects.
• Synonym直すなおすNeutralEveryday verb for repairing or correcting mistakes (「間違いを直す」); also usable as 「条文を直す」, whereas 「改正」 is the formal term for revising laws and rules.
• Synonym是正ぜせいWrittenWritten style: corrects unfairness or disparities (「格差是正」), mostly in social and administrative contexts; 「改正」 targets the rules themselves.
• Synonym訂正ていせいNeutralCorrects mistakes in text or statements (「訂正してお詫びします」); 「改正」 revises rules, not slips of the pen.
• Synonym更正こうせいFormalFormal: corrects errors in tax returns or registrations (「更正請求」), used mainly in tax and legal procedures.
• Synonym改訂かいていNeutralRevises the content of books (「改訂版」); its object is written works, while 「改正」 targets laws and rules.
• Synonym正すただすNeutralA verb meaning to straighten or correct (「姿勢を正す」,「誤りを正す」); the emphasis is on making something correct.
• Synonym直しなおしNeutralA noun for corrections or repairs (「直しが入る」); common in colloquial speech and more casual than 「改正」.
• Related変更へんこうNeutralChanges plans or settings (「予定を変更する」) with no implication of improvement; 「改正」 means revising for the better.
• Related改変かいへんWrittenWritten style: alters content so it differs from the original (「データの改変」), often implying unauthorized tampering; 「改正」 is legitimate revision.
• Related手直してなおしNeutralReworks something already roughly finished (「計画の手直し」,「法案の手直し」); the changes can be large or small, while 「改正」 is formal revision of laws.
• Related補正ほせいWrittenWritten style: supplements or corrects figures (「補正予算」,「色補正」), used mostly in finance and technical fields.
• Related矯正きょうせいNeutralCorrects defects (「歯列矯正」,「視力矯正」), used mostly for the body and for behavior.
• Related規正きせいWrittenWritten style: regulating or curbing wrongdoing (「政治資金規正法」); seen mostly in the names of laws.
• Related修整しゅうせいWrittenWritten style: retouching photographs or tidying up flaws; used mainly in photography and printing.
• Related加筆かひつWrittenWritten style: adding to or touching up a text or painting (「加筆修正」); the emphasis is on supplementing content.
• Related調整ちょうせいNeutralAdjusts or coordinates to make things fit (「日程を調整する」); can also mean adjusting rules, stressing balance, while 「改正」 fixes flaws in regulations.
• Related変革へんかくWrittenWritten style: transforms a system from its foundations (「社会変革」) on a large scale; 「改正」 merely amends provisions.
• RelatedかいぜんNeutralImproves a bad situation (「待遇改善」); the emphasis is on making things better, and its objects are not limited to rules.
• Related改編かいへんWrittenWritten style: reorganizing or rearranging (「番組改編」), used mostly for programs and organizations.
• Related改良かいりょうNeutralImproves breeds or products (「品種改良」); stresses better performance and is not used for legal provisions.
• Related校閲こうえつWrittenWritten style: reviewing and proofreading a manuscript (「原稿を校閲する」), used mainly in publishing.
• Related添削てんさくNeutralMarks up and corrects someone else's compositions or answers (「作文の添削」); used mainly in teaching, and its object is writing.
• Related匡正きょうせいWrittenWritten style: rectifying abuses or faults; rare in modern Japanese — in daily speech use 「是正」 or 「正す」.
• Related校訂こうていWrittenCollates multiple source texts to emend old texts, used mainly in textual scholarship; 「改正」 revises laws and rules.
• Antonym維持いじNeutralAntonym: keeping the current level or state unchanged, the opposite of revising, as in 「現行制度の維持」.
• Antonym存置そんちWrittenAntonym, written style: keeping an existing system as is, the opposite of 「改正」, as in 「存置か廃止か」.
• Antonym墨守ぼくしゅWrittenAntonym, written style: rigidly sticking to old customs or rules without change, the opposite of 「改正」.

「改正」 is the word for revising laws, rules or timetables. For fixing errors in general, use 「修正」 or the everyday verb 「直す」; for mistakes in text or speech, 「訂正」; for new prices or fees, 「改定」; for revised books, 「改訂」; for correcting disparities, 「是正」. The opposite of revising is 「維持」.

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

1. 法律ほうりつ・規則きそくなどの不備ふびな点てんを改あらためること。