Vac"il*late (?), v. t. [imp. & p. p. Vacillated (?); p. pr. & vb. n. Vacillating.] [L. vacillare, vacillatum; cf. Skr. va&ntil;c.]
1.
To move one way and the other; to reel or stagger; to waver.
[A spheroid] is always liable to shift and vacillatefrom one axis to another.
Paley.
2.
To fluctuate in mind or opinion; to be unsteady or inconstant; to waver.
Syn. -- See Fluctuate.
© Webster 1913.