Synonyms to lack regularity

fluctuate, alternate, back and fill, bob, bobble, careen, change, chop and change, coggle, dangle, dither, ebb and flow, equivocate, flounder, flutter, go through phases, intermit, librate, lurch, nutate, oscillate, pendulate, pitch, recur, reel, resonate, return, reverse, ring the changes, rock, roll, seesaw, shake, shift, shilly-shally, shuffle, stagger, swag, sway, swing, teeter, teeter-totter, tergiversate, toss, totter, turn, vacillate, vary, vibrate, wag, waggle, wave, waver, wax and wane, wobble, arrest, be here again, break, break off, call a break, call time, check, circle, cleanse, cleanse away, come again, come and go, come around, come round, come round again, come up again, cut off, cycle, declare a recess, defer, delay, deliver, discharge, free, free from, give release, give respite, hold off, hold over, hold up, interlude, interrupt, interval, intervene, pause, postpone, prorogue, pulsate, pulse, purge, purge away, put off, reappear, recess, release, remove, reoccur, repeat, reprieve, revolve, roll around, rotate, sn