after-party

noun
UK /ˈɑːftəˌpɑːti/
US /ˈæftərˌpɑːrti/

A smaller party that happens after a big party ends.

After the wedding, we went to an after-party at a friend's house.


OTHER MEANINGS

2. A relaxed social event held after a formal event like a concert or show.

The band held an after-party backstage for their crew.

3. A second round of festivities that continues late into the night.

The after-party lasted until sunrise.

4. An informal get-together following a conference or meeting.

Attendees networked at the after-party in the hotel lounge.