Related Clues:

• It's earthshaking
• Earthquake's onset
• Small shake
• Land movement
• Earthquake warning
• Word with hand or milk
• It comes as a shock
• Execute an unwritten agreement, in a way
• Convulsion
• Soda shop order
• Malt-shop order
• Burger go-with
• Quiver
• Quaver
• It may seal the deal