[syn: fluctuate, vacillate, waver]
The Collaborative International Dictionary of English v.0.48:
Vacillate \Vac"il*late\ (v[a^]s"[i^]l*l[=a]t), v. i. [imp. & p.
p. Vacillated (v[a^]s"[i^]l*l[=a]`t[e^]d); p. pr. & vb. n.
Vacillating.] [L. vacillare, vacillatum; cf. Skr. va[~n]c.]
1. To move one way and the other; to reel or stagger; to
[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.
WordNet (r) 3.0 (2006):
v 1: be undecided about something; waver between conflicting
positions or courses of action; "He oscillates between
accepting the new position and retirement" [syn: hover,
vibrate, vacillate, oscillate]
2: move or sway in a rising and falling or wavelike pattern;
"the line on the monitor vacillated" [syn: fluctuate,
Moby Thesaurus II by Grady Ward, 1.0:
104 Moby Thesaurus words for "vacillate":
alternate, back and fill, bob, bobble, careen, change, changeable,
chop and change, coggle, dally, dallying, dangle, demurring,
dickey, dillydallying, dither, double-minded, doubtful, doubting,
ebb and flow, eccentric, equivocate, erratic, falter, faltering,
fickle, fiddle-faddle, flounder, fluctuant, fluctuate, fluctuating,
flutter, go through phases, halt, halting, hang in doubt,
hem and haw, hesitant, hesitate, hesitating, inconstant,
indecisive, insecure, irresolute, librate, lurch, mercurial,
nutate, oscillate, oscillating, pendulate, pendulous, pitch, reel,
resonate, ring the changes, rock, roll, rootless, seesaw, shake,
shaky, shift, shifting, shilly-shally, shilly-shallying, shuffle,
stagger, stop to consider, swag, sway, swing, teeter,
teeter-totter, tentative, tergiversate, think twice, timid, toss,
totter, turn, uncertain, unresolved, unsettled, unstable, unsteady,
unsure, vacillating, vacillatory, vary, vibrate, volatile, wag,
waggle, wave, waver, wavering, wax and wane, weak, weak-kneed,
whiffle, wigwag, wobble, wobbly