The guard's face broadened into a grin.

His open face broadened in a faint smile.

His large face broadened into a smile.

His face broadened in a silly, toothy grin.

His face broadened with a smile of bright relief.

But as he drew close, his face had broadened and creased into an engaging smile.

Henri's face broadened into a smile of recognition.

He dropped back on his haunches, leaned against a tree trunk, and his face broadened with a smile.

The man's face, thick with vaguely Eastern European features, broadened into a wide grin.

He became quiet for a while and then his face broadened into a smile of gleeful anticipation in the darkness of the car.