Synonyms and related words :
alternate, back and fill, be here again, bob, bobble, careen, change, circle, coggle, come again, come and go, come around, come round, come round again, come up again, cycle, dangle, dither, ebb and flow, equivocate, flounder, fluctuate, flutter, go through phases, hem and haw, intermit, librate, lurch, nutate, pendulate, pitch, pulsate, pulse, reappear, recur, reel, reoccur, repeat, resonate, return, revolve, ring the changes, rock, roll, roll around, rotate, seesaw, shake, shift, shilly-shally, shuffle, stagger, swag, sway, swing, teeter, teeter-totter, tergiversate, toss, totter, turn, undulate, vacillate, vary, vibrate, wag, waggle, wave, waver, wax and wane, wheel, wheel around, wobble