盛せい会かい

noun

successful meeting; well-attended event

Used for conferences, parties, and gatherings that were lively, well-attended, and successful. Often appears in formal announcements and reports.

• 昨日きのうの学がっ会かいは盛せい会かいのうちに終しゅう了りょうした。

  Yesterday's academic conference concluded as a great success.

• 多おおくの参さん加か者しゃに恵めぐまれ、パーティーは盛せい会かいとなった。

  Thanks to the many attendees, the party was a lively success.