100 entries under fickle topic. ×

8
tricky(adjective, false, dishonest, cunning, deceitful)
8
trustless(adjective, uncertain, dishonest, doubtful, deceitful)
8
unsure(adjective, uncertain, nervous, dishonest, doubtful)
7
disreputable(adjective, low, false, immoral, deceitful)
7
fallible(adjective, uncertainty, unpredictable, unreliable)
7
lying(adjective, bad, false, dishonest, cunning)
6
capricious(adjective, weak, careless, loose, foolish)
6
double-dealing(adjective, mean, base, false, dishonest)
6
duplicitous(adjective, mean, bad, base, false)
6
unassured(adjective, uncertain, nervous, dishonest, doubtful)
5
inconstant(adjective, false, dishonest, immoral, dubious)
5
underhand(adjective, false, dishonest, cunning, deceitful)
5
unsound(adjective, wrong, false, loose, uncertain)
5
untruthful(adjective, wrong, false, dishonest, cunning)
4
deceptive(adjective, mean, bad, weak, wrong)
4
underhanded(adjective, mean, bad, base, false)
4
unpredictable(adjective, weak, careless, loose, foolish)
4
unprincipled(adjective, low, false, dishonest, immoral)
4
wavering(adjective, uncertain, nervous, dishonest, doubtful)
4
weak(adjective, uncertain, nervous, sensitive, doubtful)
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APASmart Define. (2016). untrustworthy thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/untrustworthy/thesaurus/synonyms
ChicagoSmart Define. 2016. "untrustworthy thesaurus" https://smartdefine.org/untrustworthy/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, untrustworthy thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/untrustworthy/thesaurus/synonyms>.
MLASmart Define. "untrustworthy thesaurus" 14 March 2016. Web. 1 October 2026. <https://smartdefine.org/untrustworthy/thesaurus/synonyms>