They sound young but aren't quite punk or new wave.
The woman on the other end of the line sounded young.
The voice sounded young, like that of a college student.
The one I talked with the other day sounded too young to know much.
The scream had sounded too young, and the body shape was wrong.
It was a strong voice, one that sounded young and vigorous.
Things have cooled off a bit for him, in part, perhaps, because he sounds so young.
His tone sounded young, not old and ill like the body in the bed.
She sounds young and worn out, so I ask if she'll trust me.
The voice was male and didn't sound terribly young, but many of her students were older.