Even as they fought the ground quivered beneath their feet!
But he could not resist the impression that the ground under him was quivering.
Now and then, the ground quivered slightly under them, with a low, muted growling.
The ground quivered slightly under them, and then shook wildly.
The ground quivered and jerked, as if in pain.
Inside the city, he was sure; more than once the ground quivered beneath his boots.
The ground quivered after a tremendous tree collapsed just behind them, and they gripped each other even more tightly, waiting for the end of everything.
The ground quivered underfoot but she didn't appear to notice.
Then I cowered down, shrank back, as the ground quivered.
The ground quivered like the skin of a massi with an itch.