social affair

It is suitable for serving at the conclusion of a meal, but it is especially satisfactory for a party or other social affair.

They went together to concerts and picture exhibitions, but Patty could rarely persuade her friend to go to a social affair.

You and Bangs were going out somewhere, were expected at some—er—social affair, weren't you?

She forgot that between young people the social affair is always trembling to the personal affair.

It was, to quote Mr. George S. Hellman, "the most splendid social affair of the first half of the nineteenth century."