move involuntarily
move reflexively

The man's eyes moved involuntarily to the finger, and he stammered slightly.

He noticed the Oberleutnant's eyes involuntarily move toward the sea.

She made a little murmur of protest and involuntarily moved her hips against him.

His eyes are open, but they move involuntarily, without purpose or recognition.

An animal, moving involuntarily at the touch of another animal.

When his hands moved below her waist, she involuntarily moved away.

And then Norman moved involuntarily for a third time.

I moved involuntarily, and Poirot's eyes came round to me.

Her hand moved involuntarily to the phone, then hesitated.

Their meeting was silent, and they did not touch, though Taiba's hand moved involuntarily toward him several times.