alternation Synonyms

flux and reflux transposition uncertainty undetermination undulation vacillation variability variation versatility transposal swing reciprocity rhythm rotation seesawing sequence shift succession supersession vibration vicissitude ricketiness coming and going ebb and flow intermittency sine wave unfixedness wobbliness fluctuations metrication fluidity vicissitudinous volatility vulnerability wavering unsteadiness demist battledore and shuttlecock interchangeableness reciprocation reciprocality reappearance changeability changeableness coaction counterchange cycle exchange exchangeability fluctuation