He closed his eyes for a moment and frowned in concentration.

The big man came to his full height and frowned in thought.

She frowned in thought, trying to remember what it was.

She frowned in surprise, then shook her head and went on.

He held it up and frowned at the number in the display.

He pushed the hair out of his eyes and frowned in concentration.

Several guards frowned in an attempt to answer the question.

She frowned at the young couple and little girl in the photograph.

He frowned again in thought, as though the action disturbed him.

He was frowning in a way she knew too well, lately.