alternation Synonyms

reciprocality swing transposal transposition uncertainty undetermination undulation unsettlement vacillation variability supersession succession substitution reciprocation reciprocity relay rhythm rotation seesaw seesawing sequence shift variation versatility metrication ricketiness coming and going ebb and flow intermittency sine wave unfixedness wobbliness fluctuations fluidity interchangeableness battledore and shuttlecock vibration vicissitude vicissitudinous volatility vulnerability wavering wigwag unsteadiness demist flux and reflux alteration changeableness coaction contrast