The Collaborative International Dictionary
Vacillant
Vacillant \Vac"il*lant\, a. [L. vacillans, p. pr. of vacillare: cf. F. vacillant. See Vacillate.] Vacillating; wavering; fluctuating; irresolute.
Wiktionary
vacillant
a. Vacillating; wavering; fluctuating; irresolute.
WordNet
vacillant
adj. uncertain in purpose or action [syn: vacillating, wavering]