And what a depressing subject for a dinner date.

Property prices can be a depressing subject for both home owners and those looking to get a foot on the property ladder.

But let's get off this depressing subject.

Well, I'm glad we've disposed of that depressing subject.

You girls must not dwell on such morbid, depressing subjects.

But, Will, you didn't come down here to talk about depressing subjects, did you?

"Not to try to change a depressing subject, but, would you like to know anything about your patient?"

Of course, you know best, dear, but isn't that sort of a depressing subject?

It was appalling; but my reflections upon this depressing subject were doomed to sudden extinction.

Van Gogh didn't brood on such depressing subjects entirely, however.