Webster's English Dictionary

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vacillate

Cross references:
  1. hesitate              
 
vac.il.late \'vas-*-.la-t\ \'vas-*-.la-t-*r\ vi [L vacillatus, pp. of 
   vacillare to sway, waver - more at PREVA]RICATE 1a: to sway through lack of 
   equilibrium  1b: FLUCTUATE, OSCILLATE  2: to waver in mind, will, or 
   feeling : hesitate in choice of opinions o r courses - vac.il.la.tor n