69 entries under unpredictable topic. ×

8
mercurial(adjective, unstable, irregular, unsettled)
8
mutable(adjective, unstable, unsettled, unreliable)
7
shifting(verb, adjective, unstable, irregular, unsettled)
6
fitful(adjective, unstable, doubtful, unsettled, vague)
6
impulsive(adjective, unstable, irregular, unsettled)
6
inconsistent(adjective, weak, uncertain, unstable, irregular)
6
varying(verb, adjective, unstable, irregular, unsettled)
5
changeful(adjective, unstable, irregular, unsettled)
5
irresponsible(adjective, silly, unstable, unsettled)
5
shifty(adjective, weak, uncertain, sensitive, doubtful)
4
irregular(adjective, unstable, doubtful, unsettled, vague)
4
unfixed(adjective, unstable, doubtful, unsettled, vague)
3
fluid(adjective, unstable, unsettled, unreliable)
3
fly-by-night(adjective, uncertain, nervous, doubtful, dubious)
3
protean(adjective, unstable, unsettled, unreliable)
3
questionable(adjective, doubtful, vague, hesitant)
2
spasmodic(adjective, unstable, unsettled, unreliable)
2
untrustworthy(adjective, weak, uncertain, nervous, doubtful)
1
mobile(adjective, weak, unstable, unsettled)
1
tricky(adjective, weak, uncertain, sensitive, 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>