Worry and guilt gnawed her gut.

Yet guilt gnawed at Liren.

His guilt gnawed at him all through the gig.

He remembered the alarm, and guilt gnawed at him.

I owed her no explanation, but sometimes guilt gnaws at me when I find myself using tricks that were taught me in the marines against people who don't want to kill me, just stomp me a little to be sociable.

The guilt gnaws at them when they answer the inevitable question - "How'd you make out?"

The man, 54-year-old Henry Zalewski, said guilt over the slaying had so gnawed at him that he decided he had to confess or commit suicide, according to a detective investigating the case.

She tried to look calm and unconcerned, but guilt gnawed within her.

As I walked away from Jinna's house, guilt gnawed at me.

A vague guilt still gnawed at her.