Things had suddenly moved from a friendly discussion to a subtle confrontation, one I didn't fully understand.

"It was wonderful, though I hope this will be a friendly, eager discussion rather than an argument."

We had a few words of rather friendly discussion.

It will give us a chance for further friendly discussion.

"In the course of a friendly discussion on professional matters?"

So for the sake of a friendly discussion, suppose she were to sink.

I intend this to be a friendly discussion of a very important topic.

At least you can get a friendly discussion going.

She saw only two men meeting for a friendly discussion.

This couple is having a friendly discussion about which gender is more likely to stop and get directions.