[{"Bold_text": "verb (used without object)", "List Items": ["to shake tremulously; quiver or tremble:He stood there quavering with fear.", "to sound, speak, or sing tremulously:Her voice quavered a moment and then she regained control.", "to perform trills in singing or on a musical instrument."]}, {"Bold_text": "verb (used with object)", "List Items": ["to utter, say, or sing with a quavering or tremulous voice."]}, {"Bold_text": "noun", "List Items": ["a quavering or tremulous shake, especially in the voice.", "a quavering tone or utterance.", "Music (chiefly British).an eighth note."]}]