10
ambivalent(adjective, shy, feeble, doubtful, hesitant)
10
doubtful(adjective, weak, uncertain, nervous, shy)
10
erratic(adjective, unstable, irregular, doubtful, unsettled)
10
timid(adjective, weak, uncertain, nervous, shy)
10
unreliable(adjective, uncertain, true, nervous, unstable)
10
unresolved(adjective, uncertain, doubtful, hesitant, dubious)
10
wishy-washy(adjective, dull, weak, uncertain, unstable)
9
dubious(adjective, uncertain, nervous, doubtful, unsettled)
9
faltering(adjective, weak, delicate, uncertain, unstable)
9
indefinite(adjective, uncertain, doubtful, vague, hesitant)
9
undependable(adjective, uncertain, nervous, unstable, irregular)
8
infirm(adjective, weak, delicate, sick, unsettled)
8
mercurial(adjective, unstable, irregular, unsettled, unpredictable)
8
mutable(adjective, unstable, unsettled, unpredictable, unreliable)
8
oscillating(noun, verb, adjective, hesitant, changeable)
8
shaky(adjective, weak, delicate, uncertain, nervous)
8
wobbly(adjective, weak, delicate, uncertain, nervous)
7
flighty(adjective, unstable, unsettled, changeable, unsteady)
7
insecure(adjective, weak, delicate, uncertain, nervous)
7
shifting(verb, adjective, unstable, irregular, unsettled)
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>