F'lon had expressed himself on this score during the informal party.

I was in an absurd position sitting there on the floor as though at an informal party.

It was a highly informal party, with nobody standing on rank.

Some of them are dropping in at my house tonight for an informal little party.

For one thing, even the "informal" parties are not.

An informal party for members is usually held in November.

A nice conversation piece at informal parties, they'd told him.

Come along with me and have your first taste of an informal party.

It is suitable for young women and can be worn to informal parties.

That, at least, was Clyde's excuse for crashing the informal party.