補欠・補闕|ほけつhoketsu[0]heiban (flat)

1. no-adjectivefilling a vacancy; supplementation
2. nounsubstitute; deputy; alternate; spare

• SynonymサブCasualColloquial loanword; a deputy or reserve, as in 「サブメンバー」; 「補欠」 is a kanji compound.
• Synonym控えひかえNeutralA person or thing kept in reserve on standby, or a copy or stub; 「補欠」 leans toward candidates filling a vacancy.
• Synonym控え選手ひかえせんしゅNeutralA reserve player waiting on the sidelines; 「補欠」 is broader, also covering by-elections and admission from a waiting list.
• Synonym補欠選手ほけつせんしゅNeutralThe full term for a substitute player; 「補欠」 alone can also mean a candidate admitted from a waiting list or filling a vacancy.
• Related代わりかわりNeutralA substitute or replacement, the most versatile word, fine even in formal settings; 「補欠」 leans toward reserve candidates.
• Related身代わりみがわりCasualColloquial; someone who takes on another's danger, situation, or blame; 「補欠」 is a candidate kept ready in advance.
• Related替え玉かえだまCasualColloquial; an impostor standing in for someone else; 「補欠」 is a legitimate candidate.
• Related代理だいりNeutralActing or handling business on another's behalf, as in 「部長代理」; 「補欠」 leans toward reserve candidates.
• Related代人だいにんWrittenWritten/formal prose; a person who stands in for the person concerned; 「補欠」 leans toward reserve personnel.
• Related代役だいやくNeutralSomeone who performs a role or duties in another's place; 「補欠」 leans toward reserve players and staff.
• Related代理人だいりにんFormalFormal; a person who handles affairs for another, including a legally authorized agent; 「補欠」 is a candidate prepared for vacancies.
• RelatedピンチヒッターCasualColloquial loanword; a baseball pinch hitter, or anyone stepping in at a critical moment; 「補欠」 leans toward standby candidates.
• Related後任こうにんNeutralA successor appointed to a post, as in 「後任者」; 「補欠」 leans toward temporary candidates.
• Related代行だいこうFormalFormal; executing duties on another's behalf, as in 「学長代行」; 「補欠」 leans toward reserve personnel.
• Related代り役かわりやくNeutralAn actor who substitutes in a performance; 「補欠」 leans toward reserve players.
• Related代理者だいりしゃFormalFormal; an agent acting for someone else; 「補欠」 leans toward reserve personnel.
• RelatedスタンドインCasualColloquial loanword; a stand-in for an actor in film or TV; 「補欠」 leans toward reserve players.
• Related後釜あとがまCasualColloquial; a person who takes over from a predecessor; 「補欠」 leans toward standby candidates.
• Related代員だいいんWrittenWritten/formal prose; a person sent to handle another's business; 「補欠」 leans toward reserve candidates.

Use 「補欠」 for a candidate who fills a vacancy, as in 「補欠選手」「補欠合格」「補欠選挙」. For someone waiting on the sidelines use 「控え」, for a deputy 「サブ」, for acting on another's behalf 「代理」, and for stepping in at a crisis 「ピンチヒッター」.

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

1. 欠かけた部分ぶぶんや人員じんいんを補おぎなうこと。また、それに備そなえるための控ひかえや人員じんいん。
2. 補欠ほけつ選手せんしゅ。