1.
organizer; host; sponsor (of an event)
The person or organization that plans and takes responsibility for an event, conference, competition, or gathering.
イベントの主催者に連絡した。
I contacted the event organizer.
主催者が開会の挨拶をした。
The organizer gave the opening address.
天候が悪いため、主催者の判断でマラソン大会は中止になった。
Due to bad weather, the marathon was cancelled at the organizer's discretion.
USAGE:
The base word 主催 means "hosting" or "organizing," and 主催者 adds the person/entity suffix. 主催 alone is also commonly used: ~主催の (hosted by ~).
COMMON COLLOCATIONS:
- 主催者側 (the organizer's side)
- 主催者発表 (announcement by the organizer)
- イベントの主催者 (the event organizer)
- 主催者の責任 (the organizer's responsibility)
RELATED:
- 主催: hosting; organizing — the act itself, often used as a modifier: ~主催の大会 (a tournament hosted by ~)