Adrienne asked, trying to sound mature and cool, but her question ended on a plaintive note.

The band sounded more mature on this record.

They weren't any older than she was, and they didn't sound much more mature.

I am here to serve," the page said, sounding mature far beyond his years.

His voice did sound more mature, less emotional.

His question sounded more mature and intelligent than what he really meant.

"We'll be back as soon as we can," Molly assured him, sounding mature beyond her years.

God, she sounded suddenly so mature, Banks thought.

She sounded so mature, maybe six or eight years old!

He apologized for not being there to help with Ricky, and she fought tears when he tried to sound so mature.