His lips thinned as he looked from one to the other.

Her lips thinned again as she bit the lower one.

Her lips thinned a bit into a kind of smile.

His lips thinned, and he studied her for a long moment.

His lips thinned and he moved away from the counter, walking to the window.

The Emperor's lips thinned in something that was not quite a smile.

He gazed down at her, his lips thinned to a narrow line.

Her lips thinned as she drew in a deep, careful breath.

Within the depths of his beard, the king's lips thinned to a hard line.

Then her lips thinned and she recovered herself with a vengeance.