改修|かいしゅうkaishuu[0]heiban (flat)

JLPT N1approx.Common
Definitions
  1. noun, suru verb, transitive verbrepair; improvement
Conjugation
Dictionary form改修する(かいしゅうする)
Polite (masu)改修します(かいしゅうします)
Negative (nai)改修しない(かいしゅうしない)
polite (masen)改修しません(かいしゅうしません)
classical zu / nu改修せず・改修せぬ(かいしゅうせず・かいしゅうせぬ)
Past (ta)改修した(かいしゅうした)
polite (mashita)改修しました(かいしゅうしました)
Past negative (nakatta)改修しなかった(かいしゅうしなかった)
polite (masen deshita)改修しませんでした(かいしゅうしませんでした)
Te form改修して(かいしゅうして)
Potential改修できる(かいしゅうできる)
Passive改修される(かいしゅうされる)
Causative改修させる(かいしゅうさせる)
Causative passive改修させられる(かいしゅうさせられる)
Conditional (ba)改修すれば(かいしゅうすれば)
tara改修したら(かいしゅうしたら)
Volitional改修しよう(かいしゅうしよう)
polite (mashou)改修しましょう(かいしゅうしましょう)
Imperative改修しろ(かいしゅうしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym修復しゅうふくWrittenWritten/formal: restoring cultural properties, buildings or relationships to their original state, as in 「文化財の修復」; 「改修」 rebuilds faulty parts instead.
  • Synonym修理しゅうりNeutralNeutral and the everyday word: fixing broken machines and objects so they work again, as in 「時計の修理」; 「改修」 is mostly for buildings and facilities.
  • Synonym補修ほしゅうWrittenWritten/formal: patching up localized damage, as in 「道路の補修工事」; small-scale mending, while 「改修」 reworks the faulty parts and can be much larger in scale.
  • Synonym修繕しゅうぜんWrittenWritten/formal: repairing damaged houses and equipment, as in 「屋根の修繕」, with the aim of keeping things as they are; 「改修」 usually carries the idea of improvement.
  • SynonymリペアNeutralNeutral loanword for repair and restoration, seen mostly in shop and service names like 「リペアショップ」; rebuilding buildings or facilities is normally 「改修」.
  • Related手入れていれNeutralNeutral: regular upkeep and care to keep something in good shape, as in 「庭の手入れ」; also a police raid. 「改修」 is a rebuilding project targeting the faulty parts.
  • Related復元ふくげんWrittenWritten/formal: returning something that has changed back to its original form, as in 「古代の建物を復元する」; 「改修」 instead aims to make things better to use.
  • Related復旧ふっきゅうWrittenWritten/formal: getting out-of-service lines, facilities or systems back in use, as in 「電気の復旧」「システムの復旧」; it is about restoring function, not rebuilding.
  • Related直しなおしNeutralNeutral noun covering both correcting mistakes and fixing things, as in 「直しが入る」; broader in use than 「改修」 and common in speech.
  • RelatedリニューアルNeutralNeutral loanword for renewing or refurbishing shops, facilities or products, as in 「店舗リニューアル」; puts more emphasis than 「改修」 on a fresh, like-new look.
  • Related繕いつくろいNeutralNeutral: mending clothes and fabric with needle and thread, as in 「着物の繕い」; its objects are cloth and garments, unlike 「改修」 for buildings and facilities.
  • Antonym新築しんちくNeutralNeutral antonym: building a structure from scratch, the opposite of 「改修」, which reworks an existing building, as in 「新築か改修か」.

Use 「改修」 for reworking and improving buildings, rivers and the like, as in 「改修工事」. For machines and objects use 「修理」; for patching localized damage 「補修」; for restoring something to its original state 「修復」 or 「復元」; for commercial renewal 「リニューアル」.

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

Japanese definitions
  1. 建築物けんちくぶつや構築こうちく物ぶつなどの具合ぐあいの悪わるい部分ぶぶんを作り直つくりなおすこと。
Kanji in this word
English equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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