agitates, buckets, jerks, jiggles, joggles, jolts, jounces, judders(chiefly British), quakes, quivers, shakes, shudders, vibrates, wobbles(also wabbles)
rocks, sways, swingschatters, quavers, shivers, thrills, tremblestwitchesdodders, waversflickers, fluctuates, flutters, oscillates, undulates, wavesbeats, palpitates, pit-a-pats, pitter-patters, pulsates, pulses, throbs