Sal's kiss was so authoritative, his arms automatically tightened around her.

Kris gulped, her arms automatically tightening on Zane.

A rubber band is more practical for hanging than string since it automatically tightens as the stems shrink.

They tightened automatically, holding the captive's body firmly against the bed.

Something was different this time, and his stomach tightened automatically with apprehension.

The shoes tightened automatically, adjusting to his feet.

Anything out of the ordinary in the hotel would automatically tighten security.

Sublett yelped as the crash-harnesses tightened automatically, yanking him up out of his usual slouch.

His grasp tightened around it automatically, and she found herself smiling.

My stomach muscles tightened automatically as I touched her.