87 entries under unpredictable topic. ×

4
stray(chance, unreliable, rare, uncommon)
4
vacillating(adjective, unstable, doubtful, unsettled, vague)
3
unfixed(adjective, unstable, doubtful, unsettled, vague)
2
changeful(adjective, unstable, unsettled, unreliable)
2
flaky(unusual, strange, crazy, changeable)
2
roving
2
undirected(adjective, unusual, uncertain, insignificant, unstable)
1
agitated(adjective, wild, unstable, unsettled)
1
blowing hot and cold(expression, idiom, lively, changeable)
1
bubbleheaded(lively, changeable, temperamental, resilient)
1
buoyant(lively, active, changeable, resilient)
1
elastic(lively, changeable, temperamental, resilient)
1
expansive(lively, changeable, temperamental, resilient)
1
flip(lively, changeable, resilient)
1
fluid(adjective, unstable, unsettled, unreliable)
1
gay(lively, changeable, resilient)
1
iffy(adjective, unusual, uncertain, unstable, doubtful)
1
irrepressible(lively, changeable, temperamental, resilient)
1
lighthearted(lively, changeable, temperamental, resilient)
1
lively(active, changeable, resilient, vaulting)
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APASmart Define. (2016). irregular thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/irregular/thesaurus/synonyms
ChicagoSmart Define. 2016. "irregular thesaurus" https://smartdefine.org/irregular/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, irregular thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/irregular/thesaurus/synonyms>.
MLASmart Define. "irregular thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/irregular/thesaurus/synonyms>