verb (used without object), vac·il·lat·ed, vac·il·lat·ing.
Origin of vacillate
Related formsvac·il·la·tor, noun
Examples from the Web for vacillate
I kind of self-edit that out of the history, but they did vacillate for quite a while.David Chase on Tony Soprano’s Fate, the State of TV, and Why He Couldn’t Finish ‘True Detective’|Marlow Stern|September 4, 2014|DAILY BEAST
It seems like you vacillate between 10 and 20 members at any given time.Mother Falcon the 18-Piece Indie Symphonic Rock Band Taking Texas By Storm|Abby Haglage|June 2, 2013|DAILY BEAST
Van der Sloot appears to vacillate between apologetic and aloof in his response, captured on hidden camera.
This was a severe disappointment to Bessy, and left her an alternative that required more than courage, but she did not vacillate.The Day of the Beast|Zane Grey
Long did he vacillate whether Tom Keane should not be arrested on suspicion.Roland Cashel|Charles James Lever
"He is too independent to vacillate on account of ridicule," said Ida.Alone|Marion Harland
They vacillate, conforming now to the interest of the wage-workers, now to the interest of the employers.Socialism|John Spargo
It is wiser to be wrong and not hesitate than to vacillate and be right.H. R.|Edwin Lefevre