主しゅ催さい者しゃ

しゅ

さ

い

しゃ

Meanings

Refers to the person or entity that plans and runs an event, conference, or competition. Can imply both organizational and financial backing.

ホスト
主催者 is a more formal, official term for the organizer of an event, while ホスト is a looser, more conversational word for the same role.
プロモーター
プロモーター often implies a professional organizer of commercial events like concerts or boxing matches, while 主催者 is the general term for whoever hosts or organizes any event.
発ほっ起き人にんN1
主催者 is the person or group who hosts and runs an event, while 発起人 is specifically the one who first proposed and pushed the idea forward.
幹かん事じN2
主催者 is the host or sponsor who officially puts on an event, while 幹事 is the person who handles the practical planning and coordination, often on someone else's behalf.

参さん加か者しゃ
主催者 is the organizer who runs the event, the opposite role to 参加者, the person who joins it.
来らい賓ひんN1
主催者 is the host or organizer of an event, the role opposite to 来賓, the invited guest attending it.

Compound of 主催 (shusai, 'sponsorship, organization') + 者 (sha, 'person').