An impromptu gathering can quickly turn into a proper party, so these nibbles are great to have on hand.

The young people had drifted to an impromptu gathering 100 yards down the lane.

He also told an impromptu gathering of reporters that he regretted what he had done.

For months, they also went several times a week to memorials, ceremonies, funerals and impromptu gatherings at widows' homes after work.

Rules are very flexible at these impromptu gatherings.

There were reports of impromptu gatherings at Apple stores, and...

The moonlight was vivid: the dump looked like an impromptu gathering of fantastical creatures.

For all the world, the impromptu gathering had the flavor of a mid-afternoon chat.

Often these impromptu gathering drew as many hecklers as supporters.

On April 18 every year since 1908, the fountain has been the site of an impromptu gathering.