替え玉・替玉|かえだまkaedama[0]heiban (flat)

1. nounstand-in; proxy; substitute; double; ringer
   警察けいさつが追おっていたのは替え玉かえだまで、その間あいだに真犯人しんはんにんを逃のがしてしまった。↗

   The police followed a red herring while they let the true criminal escape.
2. nounsecond serving of noodles (to add to one's remaining ramen broth)

• Synonym代役だいやくNeutralAn actor who performs a role in someone's place; 「替え玉」 leans toward impersonation, as in exam fraud, and also means a ramen noodle refill.
• SynonymピンチヒッターCasualA colloquial loanword for a pinch hitter in baseball, or figuratively someone who steps in during a crisis; 「替え玉」 instead suggests passing oneself off as the person.
• Synonym影武者かげむしゃNeutralA warrior's body double who deceives the enemy by posing as his lord; 「替え玉」 leans toward impersonation in general.
• SynonymスタンドインNeutralA loanword for a stand-in actor in film or TV; 「替え玉」 leans toward impersonation, taking someone's place under a false identity.
• Related代わりかわりNeutralThe broadest word for substitution or a stand-in, used in all sorts of contexts; 「替え玉」 carries a nuance of deception and impersonation.
• Related身代わりみがわりNeutralA stand-in who takes another's place to receive harm or punishment, as in 「身代わりになる」; 「替え玉」 instead suggests impersonation.
• Related補欠ほけつWrittenWritten/formal prose for a reserve or alternate filling a vacancy, as in 「補欠選手」; the person's status is open, while 「替え玉」 implies deception.
• Related代人だいにんWrittenWritten/formal prose for someone who appears or acts in another's name, openly; 「替え玉」 carries a nuance of impersonation.
• Related代理人だいりにんFormalFormal, a legal agent or proxy authorized to act on another's behalf; 「替え玉」 is someone falsely posing as the person.
• Related吹き替えふきかえNeutralRefers to dubbing films into another language, or a stand-in actor on set; 「替え玉」 instead suggests posing as the person.
• Related代理だいりNeutralActing on another's behalf as their agent, as in 「代理出席」; 「替え玉」 is someone falsely passing as the person.
• Related代行だいこうWrittenWritten/formal prose for performing a task on someone's behalf, as in 「運転代行」; 「替え玉」 instead suggests impersonation.
• Related代替だいたいWrittenWritten/formal prose for a substitute or alternative, as in 「代替案」; 「替え玉」 leans toward a person posing as someone else.
• Related控えひかえNeutralA reserve kept ready, such as a backup player 「控えの選手」, or a spare copy; 「替え玉」 instead suggests impersonation.
• Related代理者だいりしゃFormalFormal, an agent entrusted to carry out another's duties; 「替え玉」 carries a nuance of deception and impersonation.
• RelatedスタントマンNeutralA loanword for a male stunt double who performs dangerous scenes for a star; 「替え玉」 leans toward impersonation.
• RelatedスタントウーマンNeutralA loanword for a female stunt double; 「替え玉」 leans toward impersonation, taking someone's place under a false identity.

Use 「替え玉」 for someone posing as another, a fake substitute, or a ramen noodle refill, as in 「替え玉受験」; for an acting understudy use 「代役」, for taking another's punishment 「身代わり」, for formal agency 「代理」, and for a stunt double 「スタントマン」.

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

1. 本物ほんものの代用だいようとして使用しようする偽物にせもの。
2. 本人ほんにんと偽いつわり代かわりとなる者もの。
3. 追加ついか注文ちゅうもんした麺めん。