13
untrustworthy(adjective, false, careless, foolish, dishonest)
13
fitful(adjective, free, cross, careless, cold)
13
inconsistent(adjective, change, continue, passionate, loose)
13
irresponsible(adjective, careless, excited, foolish, unstable)
13
unsettled(adjective, weak, uncertain, unstable, irregular)
13
wavering(adjective, weak, uncertain, unstable, dishonest)
12
fluctuating(adjective, weak, free, wild, lively)
12
fly-by-night(adjective, careless, foolish, dishonest, immoral)
12
unfaithful(adjective, false, cold, hot, dishonest)
12
vacillating(adjective, weak, uncertain, unstable, irregular)
11
changeful(adjective, careless, unstable, dishonest, irregular)
11
impulsive(adjective, moving, cross, lively, melancholy)
11
indecisive(adjective, weak, uncertain, unstable, doubtful)
11
quicksilver(adjective, cold, lively, hot, changeable)
11
shifting(adjective, unstable, irregular, unsettled, shaky)
11
temperamental(adjective, change, moving, continue, delicate)
11
unsure(adjective, weak, uncertain, dishonest, hesitant)
10
giddy(adjective, weak, happy, careless, excited)
10
wayward(adjective, careless, unstable, unreasonable, contrary)
9
fleeting(adjective, impulsive, unpredictable, capricious, transient)
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APASmart Define. (2016). fickle thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/fickle/thesaurus/synonyms
ChicagoSmart Define. 2016. "fickle thesaurus" https://smartdefine.org/fickle/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, fickle thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/fickle/thesaurus/synonyms>.
MLASmart Define. "fickle thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/fickle/thesaurus/synonyms>