[{"Bold_text": "verb (used without object)", "List Items": ["to move rhythmically and steadily to and fro, as a pendulum; oscillate.", "to move to and fro or up and down quickly and repeatedly; quiver; tremble.", "(of sounds) to produce or have a quivering or vibratory ; resound.Synonyms: echo", "to thrill, as in emotional response.", "to move between alternatives or extremes; fluctuate; vacillate."]}, {"Bold_text": "verb (used with object)", "List Items": ["to cause to move rhythmically and steadily to and fro, swing, or oscillate.", "to cause to move to and fro or up and down quickly and repeatedly; cause to quiver or tremble.", "to give forth or emit by, or as by, vibration .", "to measure or indicate by vibration or oscillation:a pendulum vibrating seconds."]}]