Buoyant
Example:
Wow Amy, that party was buoyant. I can’t believe we almost didn’t go.
Opposite:
Omg Amy, that party sank. Can’t believe we thought it would be fun.
Wow Amy, that party was buoyant. I can’t believe we almost didn’t go.
Opposite:
Omg Amy, that party sank. Can’t believe we thought it would be fun.