You must have known I wasn't serious with my proposal.

Maybe Ill try to get serious with this in the future.

But the ones still standing were serious with their boots.

Economic problems remain serious, with many people out of work.

"That can be very serious with old people," he said.

"How can his Richard be serious with the same words coming out of my mouth?"

I knew that the difference between the king and my father were growing more serious with the passing of every week.

He was dead serious, with the speech of someone used to authority.

John and Mary are quite serious with each other now.

She can also become very serious, especially with issues in the Spiral.