He may pause, but he must not hesitate,—and tremble, but must not vacillate.
Long did he vacillate whether Tom Keane should not be arrested on suspicion.
They vacillate, conforming now to the interest of the wage-workers, now to the interest of the employers.
Why do you vacillate, and keep us all in the dark as to what you mean?
As if it were possible to wait now, to weigh, ...