[{"Bold_text": "verb (used without object)", "List Items": ["(of persons) to shake or tremble from cold, weakness, fear, anger, or the like:He spoke boldly even though his legs were quaking.Synonyms: shudder", "(of things) to shake or tremble, as from shock, internal convulsion, or instability:The earth suddenly began to quake.Synonyms: quiver"]}, {"Bold_text": "noun", "List Items": ["an earthquake.", "a trembling or tremulous agitation."]}]