100 entries under unpredictable topic. ×

4
changeful(adjective, unstable, irregular, unsettled)
4
false(adjective, dishonest, deceitful, unreliable)
4
shifting(adjective, unstable, irregular, unsettled)
4
unfaithful(adjective, false, dishonest, deceitful)
4
unfixed(adjective, unstable, unsettled, vague)
4
untrue(adjective, false, dishonest, deceitful)
3
loose(adjective, informal, careless, foolish, immoral)
2
bum(adjective, unreliable, rotten, variable)
2
deceitful(adjective, false, dishonest, unreliable)
2
disreputable(adjective, dubious, unreliable, fickle)
2
indeterminate(adjective, uncertain, nervous, doubtful, vague)
2
no-good(adjective, unreliable, variable, irresponsible)
2
varying(adjective, unstable, irregular, unsettled)
1
cussed(adjective, passionate, unstable, unreliable)
1
deceptive(adjective, false, dishonest, rotten)
1
easily upset(expression, adjective, passionate, unstable)
1
excitable(adjective, passionate, excited, unstable)
1
explosive(adjective, passionate, uncertain, unstable)
1
fiery(adjective, passionate, unstable, unreliable)
1
froward(adjective, passionate, unstable, unreliable)
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APASmart Define. (2016). undependable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/undependable/thesaurus/synonyms
ChicagoSmart Define. 2016. "undependable thesaurus" https://smartdefine.org/undependable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, undependable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/undependable/thesaurus/synonyms>.
MLASmart Define. "undependable thesaurus" 4 March 2016. Web. 25 September 2026. <https://smartdefine.org/undependable/thesaurus/synonyms>