THESAURUS
ebb and flow
Lissajous figure, alternate, alternation, back and fill, back-and-forth, battledore and shuttlecock, be poised, billow, break, comb, come and go, coming and going, crash, dash, direct tide, ebb, ebb tide, flood, flood tide, flounder, flow, fluctuate, flux, flux and reflux, full tide, go through phases, heave, high tide, high water, hitch and hike, lift, low tide, low water, lunar tide, neap, neap tide, opposite tide, oscillate, pass and repass, peak, pendulate, popple, reciprocate, reciprocation, refluence, reflux, rhythmic play, ride and tie, ring the changes, rip, riptide, rise, rise and fall, roll, scend, seesaw, seesawing, send, shift, shuffle, shuttle, shuttlecock, sine wave, smash, solar tide, spring tide, stagger, surge, sway, swell, swing, teeter, teeter-totter, teeter-tottering, teetering, thalassometer, tidal amplitude, tidal current, tidal current chart, tidal flow, tidal range, tide, tide chart, tide gate, tide gauge, tide race, tide rip, tidewater, tideway, to-and-fro, toss, totter, tottering, turn, undulate, ups and downs, vacillate, vary, wave, waver, wax and wane, wibble-wabble, wigwag, wobble, zigzag
ROGET THESAURUS
ebb and flow
Oscillation
N
oscillation, vibration, libration, motion of a pendulum, nutation, undulation, pulsation, pulse, alternation, coming and going,
ebb and flow, flux and reflux, ups and down, fluctuation, vacillation, wave, vibratiuncle, swing, beat, shake, wag, seesaw, dance, lurch, dodge, logan, loggan, rocking-stone, vibroscope, oscillating, oscillatory, undulatory, pulsatory, libratory, rectilinear, vibratory, vibratile, pendulous, to and fro, up and down, backwards and forwards, hither and yon, seesaw, zigzag, wibble-wabble, in and out, from side to side, like buckets in a well.
VB
oscillate, vibrate, librate, alternate, undulate, wave, rock, swing, pulsate, beat, wag, waggle, nod, bob, courtesy, curtsy, tick, play, wamble, wabble, dangle, swag, fluctuate, dance, curvet, reel, quake, quiver, quaver, shake, flicker, wriggle, roll, toss, pitch, flounder, stagger, totter, move up and down, bob up and down, pass and repass,
ebb and flow, come and go, vacillate, teeter, brandish, shake, flourish.