From the corner of his eye he saw her full mouth tighten momentarily.

Hoppie's grip tightened around my fingers momentarily and then relaxed again.

Thom's mouth tightened momentarily, then he shook his head again.

His jaw tightened momentarily, with shame and bitter anger.

Jake saw but did not fully understand the flash of alarm that momentarily tightened Kira's face.

The grip at the back of her neck tightened momentarily.

His jaw tightened momentarily, but all he said was, "Sleeping on a bed of ice isn't very practical in high altitudes."

The wrinkled lips tightened momentarily at this slowness of wit.

His hand momentarily tightened on her wrists so that she could not stifle a cry of pain.

His finger tightened momentarily on the trigger, then relaxed.