(adv.) In a serpentine manner.

alternately anticlockwise around back and forth backward and forward backwards and forwards by turns capriciously changeably clockwise counterclockwise desultorily erratically every other head over heels heels over head hitch and hike in a circle in a spin in a whirl in and out in circles in rotation in turns inconstantly make and break meanderingly meandrously off and on on and off reciprocally ride and tie round round about seesaw serpentinely shuttlewise sinuously to and fro tortuously turn about twistingly uncertainly unsteadfastly unsteadily up and down variably waveringly widdershins windingly