Her voice and face were very steady, utterly serious.

She looked bright and perky, despite the late hour, but utterly serious.

"And you know what I mean," she replied, utterly serious.

I wanted to laugh, but he seemed to be utterly serious about what he was saying.

This man wasn't kidding with them; he was utterly serious.

But when the young man looked up, Norman saw to his astonishment that he was utterly serious.

Her beautiful face was utterly serious as she nodded to me.

She looked over at him, her expression utterly serious.

The expression on the stranger's face was utterly serious, determined.

It's very much his own work, It is utterly serious and comes from both the head and the heart.