Power's face tightened, but he maintained a vacant smile.

Sura looked on, a vacant smile hovering about her mouth.

The boy licked his lips and smiled a vacant smile.

Then she looked up and smiled her bright, vacant smile.

He looked like he was deep in thought but trying to hide it with a rather vacant smile.

He looked up with a vacant smile on his face when Kor approached him.

He looked at her with a vacant smile.

Like full contemporaries they all excused themselves with vacant little social smiles.

She now accepted these with the vacant smile of a mummy.

And if he believed it- He smiled his vacant smile at her.