Vacillate (văs&ibreve_;llāt), v. i. [imp. & p. p. Vacillated (văs&ibreve_;llāt&ebreve_;d); p. pr. & vb. n. Vacillating.] [L. vacillare, vacillatum; cf. Skr. vañc.][1913 Webster]
1. To move one way and the other; to reel or stagger; to waver.[1913 Webster]
[A spheroid] is always liable to shift and vacillatefrom one axis to another.
2. To fluctuate in mind or opinion; to be unsteady or inconstant; to waver.[1913 Webster]
Syn. -- See Fluctuate.[1913 Webster]