THESAURUS
wax and wane
alternate, back and fill, battledore and shuttlecock, come and go, ebb and flow, flounder, fluctuate, go through phases, hitch and hike, oscillate, pass and repass, pendulate, reciprocate, ride and tie, ring the changes, seesaw, shift, shuffle, shuttle, shuttlecock, stagger, sway, swing, teeter, teeter-totter, to-and-fro, totter, turn, vacillate, vary, waver, wibble-wabble, wigwag, wobble, zigzag
ROGET THESAURUS
wax and wane
Change
VB
change, alter, vary,
wax and wane, modulate, diversify, qualify, tamper with, turn, shift, veer, tack, chop, shuffle, swerve, warp, deviate, turn aside, evert, intervert, pass to, take a turn, turn the corner, resume, work a change, modify, vamp, superinduce, transform, transfigure, transmute, transmogrify, transume, metamorphose, ring the changes, innovate, introduce new blood, shuffle the cards, give a turn to, give a color to, influence, turn the scale, shift the scene, turn over a new leaf, recast, reverse, disturb, convert into.