87 entries under unpredictable topic. ×

1
lubricious(adjective, lively, uncertain, active)
1
mad(unusual, strange, lively, changeable)
1
mobile(adjective, lively, active, unstable, unsettled)
1
protean(adjective, unstable, unsettled, unreliable)
1
quicksilver(lively, changeable, temperamental)
1
resilient(lively, changeable, temperamental)
1
short-fuse(lively, changeable, temperamental, resilient)
1
spirited(lively, changeable, temperamental, resilient)
1
sprightly(lively, changeable, resilient)
1
temperamental(adjective, lively, uncertain, active)
1
ticklish(adjective, lively, active, changeable)
1
up-and-down(lively, changeable, uneven, temperamental)
1
variant(adjective, unstable, unsettled, different)
1
yo-yo(adjective, lively, active, changeable)
0
active(lively, changeable, vaulting)
0
brilliant(excellent, lively, special, changeable)
0
dicey(unreliable, changeable, erratic, random)
0
directionless
0
effervescent(lively, changeable)
0
fast-talking(lively, changeable)
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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>