2
enfeebled(adjective, weak, delicate, ill, sick)
2
fanciful(adjective, capricious)
2
fast and loose(expression, idiom, irresolution)
2
feeble(adjective, weak, gentle, delicate, modest)
2
fence
2
fleeting(adjective, capricious)
2
fluctuant(adjective, weak, uncertain, nervous, unstable)
2
foolish
2
frivolous(adjective, changeable, untrue, unsteady, indecisive)
2
half-hearted(adjective, uncertain, shy, doubtful, hesitant)
2
halfhearted(adjective, weak, uncertain, doubtful, hesitant)
2
hesitate
2
iffy(adjective, uncertain, nervous, doubtful, vague)
2
insipid(adjective, irresolute)
2
low
2
mind
2
mistrustful(uncertain, nervous, doubtful, insecure, unsure)
2
moody
2
moot
2
of two minds(expression, adjective, idiom, uncertain, doubtful)
10 years ago|20k views|share |citing 
APASmart Define. (2016). vacillating thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/vacillating/thesaurus/synonyms
ChicagoSmart Define. 2016. "vacillating thesaurus" https://smartdefine.org/vacillating/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, vacillating thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/vacillating/thesaurus/synonyms>.
MLASmart Define. "vacillating thesaurus" 4 March 2016. Web. 21 September 2026. <https://smartdefine.org/vacillating/thesaurus/synonyms>