affair , ***
occasion ***
social occasion
function ***
social function

"And the occasional social function at which we are expected."

The latter have had a social function as meeting places up to the present day.

The society has a community center which can be used for any social functions.

"The social function of health insurance is to protect everyone."

Each provides a range of social functions throughout the year.

I had met four of them at social functions over the years.

The idea of social function developed in two different ways, however.

It had been at a social function given by her father.

Music, however, can also have a social function rather than an artistic one.

She hardly ever saw the two of them together, even at social functions.