To move back and forth or to and fro, especially rhythmically and rapidly. See Synonyms at swing. To feel a quiver of emotion. To shake or move with or as if with a slight quivering or trembling motion: "Even as the film moved . . . to the more deadly fields of Vietnam, old hatreds vibrated in me\u201d ( Loudon Wainwright). To produce a sound; resonate. To fluctuate or waver in making choices; vacillate. To cause to tremble or quiver. To cause to move back and forth rapidly. To produce (sound) by vibration.