代替・代替え|だいたいdaitai[0]heiban (flat)

Common
だいがえdaigae[0]heiban (flat)
Which spelling to use
代替代替 is the most common form and the recommended choice for beginners. Use it when you need to write this word.
代替え代替え is a less common variant of 代替 and uses kanji plus kana. Beginners should generally use 代替 instead.
Definitions
  1. noun, suru verb, transitive verbsubstitution
  2. no-adjectivealternative; substitute
    切符きっぷを申し込もうしこまれる際さいは代替日だいたいびもご指定していください。↗
    When applying for tickets, please give alternative dates.
Conjugation
Dictionary form代替する(だいたいする)
Polite (masu)代替します(だいたいします)
Negative (nai)代替しない(だいたいしない)
polite (masen)代替しません(だいたいしません)
classical zu / nu代替せず・代替せぬ(だいたいせず・だいたいせぬ)
Past (ta)代替した(だいたいした)
polite (mashita)代替しました(だいたいしました)
Past negative (nakatta)代替しなかった(だいたいしなかった)
polite (masen deshita)代替しませんでした(だいたいしませんでした)
Te form代替して(だいたいして)
Potential代替できる(だいたいできる)
Passive代替される(だいたいされる)
Causative代替させる(だいたいさせる)
Causative passive代替させられる(だいたいさせられる)
Conditional (ba)代替すれば(だいたいすれば)
tara代替したら(だいたいしたら)
Volitional代替しよう(だいたいしよう)
polite (mashou)代替しましょう(だいたいしましょう)
Imperative代替しろ(だいたいしろ)

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

Synonyms & antonyms
  • Synonym代わりかわりNeutralThe everyday, most common word for substituting or for a substitute; 「代替」 is the written, formal word, seen in 「代替案」 and 「代替エネルギー」.
  • Synonym替えかえNeutralCovers changing something out or a spare, as in 「替えのシャツ」; 「代替」 stresses one thing standing in for another.
  • Synonym入れ替えいれかえNeutralSwapping or switching things around; 「代替」 is putting something else in place of the original.
  • Synonym差し替えさしかえNeutralReplacing with a new or corrected version, e.g. of documents or images; 「代替」 is about substitution.
  • Synonym身代わりみがわりNeutralTaking someone's place or the blame for them, or a stand-in; 「代替」 is mostly things or plans.
  • Synonym入れ替わりいれかわりNeutralPeople or things being replaced or alternating—either swapping places or one taking over from the other; 「代替」 stresses substitution with something else.
  • Synonym置換ちかんWrittenWritten/formal prose: substitution, also a term in chemistry and mathematics; 「代替」 is the general written word.
  • Synonym取り替えとりかえNeutralSwapping or changing one thing for another; 「代替」 stresses having something else serve in its place.
  • Synonym置き換えおきかえNeutralPutting one thing in place of another, e.g. replacing text; 「代替」 stresses the substitute function.
  • Related交代こうたいNeutralRotation, taking turns or shift changes, mostly for people; 「代替」 is mostly for things.
  • Related交換こうかんNeutralMutual exchange, or swapping an old one for a new one, as in 「電池を交換する」; 「代替」 stresses using something else in place of the original.
  • Related互換ごかんNeutralBeing mutually interchangeable, as in 「互換性」; 「代替」 is substitution.
  • Related代人だいにんWrittenWritten/formal prose: a deputy or proxy acting for someone; 「代替」 is mostly for things.
  • Related代役だいやくNeutralAn actor standing in for another, or more broadly someone covering another's duties; 「代替」 is mostly things or plans.
  • Related代理人だいりにんFormalFormal: a person authorized to act for another; 「代替」 is a substitute or alternative plan.
  • Related付け替えつけかえNeutralReattaching or switching something over, also in 「名義の付け替え」; 「代替」 stresses substituting with something else.
  • RelatedかけがえNeutralMostly seen in 「掛け替えのない」, meaning irreplaceable; rarely used on its own.
  • Related代り役かわりやくNeutralA stand-in actor; 「代替」 is mostly for things.
  • Related代員だいいんWrittenWritten and rare: a person deputizing for another; in everyday use say 「代理」.
  • Related代替物だいたいぶつWrittenLegal and commercial term for goods replaceable by others of the same kind; 「代替」 can also mean a substitute, but more often the act of substituting.
  • Related代品だいひんNeutralUncommon: a substitute item; in everyday use say 「代用品」.
  • Related代用品だいようひんNeutralAn item used in place of the original, as in 「バターの代用品」; 「代替」 is more written and can also refer to a plan.

In written or formal prose use 「代替」, as in 「代替案」. In everyday speech say 「代わり」. Use 「交代」 for shift changes and rotation, 「交換」 for exchanging or replacing, 「代役」 for stand-in actors, and 「代用品」 for substitute items.

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

Japanese definitions
  1. 他ほかの物もので替かえること。
Kanji in this word
English equivalents
See also

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