flickered, fluctuated, fluttered, oscillated, wavedagitated, bucketed, convulsed, jerked, jiggled, joggled, jolted, jounced, juddered(chiefly British), quaked, quivered, shook, shuddered, vibrated, wobbled(also wabbled)rocked, swayed, swungchattered, quavered, shivered, thrilled, trembledtwitcheddoddered, waveredbeat, palpitated, pit-a-patted, pitter-pattered, pulsated, pulsed, throbbed