She drew one out, grumbling silently to herself.

Grumbling silently to himself, Cato forgot to pay attention to where he was putting his feet.

He could have stopped, she grumbled silently, and he must have seen her.

I have to sit here like an obedient dog while my master speaks to me, he grumbled silently.

Of course, he grumbled silently, that was probably too much to ask.

My brain would function perfectly well if you'd let me use it, Poole grumbled silently.

"It's me all right," Clem grumbled silently to himself.

He grumbled silently, remembering a time when sneaking through the streets of Cenaria at night had been fun.

Damned tough to see the ground inside the suit, Jamie grumbled silently.