替え・換え・代え|かえkae[0]heiban (flat)

1. noun, noun (suffix)change; alteration
2. nounsubstitute; spare; replacement; change (e.g. of clothes)
   シャツの替かえがない。↗

   I don't have a spare shirt.
3. nounrate of exchangeusu. 換え

• Synonym交換こうかんNeutralExchange or interchange, emphasizing a two-way swap; very widely used, as in 「部品交換」.
• Synonym代替だいたいWrittenSubstitution or use of an alternative, focusing on finding a substitute option or item; leans toward written/formal prose.
• Synonym差し替えさしかえNeutralReplacing text or images, focusing on inserting the new in place of the old.
• Synonym取り替えとりかえNeutralSwapping things out, focusing on replacing an old one with a new one, as in 「部品の取り替え」; 「替え」 usually refers to a spare kept on hand.
• Synonym置換ちかんWrittenSubstitution in written, technical contexts, such as character replacement or chemical substitution.
• Synonym置き換えおきかえNeutralReplacement or substitution, focusing on putting one thing in place of another.
• Related代替わりだいがわりNeutralSuccession: a family business or store's headship passing on, focusing on the changeover of successors.
• Related代わりかわりNeutralA substitute or stand-in; broad in use, and also covers something given in return, as in 「代わりに」.
• Related引き換えひきかえNeutralExchange or conversion, as in 「引換券」「代金引換」「命と引き換えに」, focusing on giving one thing to obtain another.
• Related替え玉かえだまCasualColloquial: an impostor standing in for someone, or a second helping of noodles for leftover ramen broth; centers on the stand-in sense.
• Related代人だいにんWrittenA proxy or deputy acting in someone's place; rare in written prose.
• Related補欠ほけつNeutralA reserve or alternate, focusing on backup personnel on a team.
• Related代理人だいりにんWrittenAn agent or proxy; legal and business usage, focusing on acting under entrusted authority.
• Related代理だいりNeutralActing in another's name or handling things for them, as in 「代理店」.
• Related身代わりみがわりNeutralA stand-in who takes another's place, focusing on bearing misfortune for someone else, even as a scapegoat.
• Related代役だいやくNeutralFilling a role or post in place of the person originally chosen — actors, hosts and more; focuses on temporarily standing in.
• Related代り役かわりやくNeutralA stand-in or double for an actor, focusing on performing a role in someone's place.
• Related代理者だいりしゃWrittenAn agent or proxy; an explanatory term, focusing on handling things for another person.
• Related代員だいいんWrittenA person deputizing for another; rare in written prose, with 「代理人」 the usual modern word.
• RelatedかけがえNeutralMostly seen in 「掛け替えのない」, meaning irreplaceable or one of a kind.
• Related代物だいぶつWrittenA substitute object; rare, with 「代用品」 the usual modern word.
• Related代替物だいたいぶつWrittenIn transactions, goods replaceable by others of the same kind and quality; legal and business usage. For everyday substitutes, say 「代用品」.
• Related代品だいひんWrittenA substitute article; rare in written prose, focusing on substitute merchandise.
• Related代用品だいようひんNeutralA substitute item used as a stopgap, as in 「砂糖の代用品」.
• Antonym元もとNeutralThe original or former state, the opposite of 「替え」 once something has been replaced.

For a spare or replacement kept on hand, use 「替え」, as in 「替えのシャツ」「替え芯」; it also forms suffixes like 「着替え」「両替」. For swapping old for new, say 「取り替え」 or 「交換」. For substitutes, use 「代わり」 or 「代用品」; for stand-ins, 「身代わり」 or 「代役」. The opposite is 「元」.

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

1. かえること。交換こうかんすること。
2. 予備よび。代かわり。
3. 鞣なめすこと。
4. 交換こうかんする際さいの割合わりあい。