世話人|せわにんsewanin[0]heiban (flat)

1. nounsponsor; manager; caretaker
2. noungo-between; mediator; agent

• Synonym元締めもとじめNeutralColloquial: a general manager or behind-the-scenes boss; leans toward the one who controls the money.
• Synonym肝いりきもいりNeutralColloquial: acting as a go-between making arrangements, or the person who does, as in 「市長の肝いり」; leans toward backing by an influential figure.
• SynonymオーガナイザーNeutralA loanword for an event organizer; leans toward modern event planning.
• Synonymまとめ役まとめやくNeutralColloquial: a coordinator, as in 「クラスのまとめ役」; leans toward pulling everyone's views together.
• Synonym組織者そしきしゃWrittenWritten/formal prose for an organizer; an explanatory term rather than everyday speech.
• RelatedオルグNeutralA loanword for an organizer in a union or political party; leans toward social-movement contexts.
• RelatedプロモーターNeutralA loanword for a promoter of shows, sporting events, products or services; 「世話人」 is more about running meeting affairs.
• Related主催者しゅさいしゃNeutralThe person or body that stages or hosts an event, as in 「大会主催者」; 「世話人」 is more about hands-on arrangements and looking after things.
• Related勧進元かんじんもとWrittenWritten/formal prose: the backer or promoter behind sumo tournaments and similar performances; carries a traditional flavor.
• Related興行主こうぎょうぬしWrittenWritten/formal prose: a showman, impresario or promoter who runs shows, plays or films; leans toward the entertainment business.
• Related座元ざもとWrittenWritten/formal prose: a theater proprietor who stages productions; carries a kabuki flavor.

Use 「世話人」 for someone who handles the arrangements for a group or gathering, as in 「同窓会の世話人」 or 「世話人会」. For the formal host of an event say 「主催者」; for a coordinator say 「まとめ役」. Loanwords like 「オーガナイザー」 and 「プロモーター」 suit modern events and promotion, while 「勧進元」 and 「座元」 are written terms with a traditional flavor (sumo, kabuki) and 「興行主」 is a written term for a show-business promoter.

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

1. 団体だんたいや会合かいごうなどを組織そしき・運営うんえいする際さいに、めんどうをみる人ひと。