He closed his eyes; his jaw stiffened as if he were fighting something.

Maria's jaw stiffened and she searched for her most adult voice.

Weston's jaw stiffened; his fingers plucked the tips of his military mustache.

She broke off, her face and jaw stiffening in a successfully stifled yawn.

'They were understanding and helpful,' I said, feeling my jaw stiffen with resentment.

Air hissed out as his jaw stiffened.

Clive's jaw stiffened a fraction, his eyebrows dropped, and he moved his head in a slight sideways motion.

His jaw stiffened and his eyes bored into Velikov.

It was getting harder and harder to speak as his jaw stiffened.

April's jaw stiffened, his eyes grew heavy with disenchantment.