196 entries under unpredictable topic. ×

9
arbitrary(adjective, careless, unstable, unreasonable, chance)
9
intermittent(adjective, violent, irregular, disturbed)
9
stray(adjective, irregular, purpose, unreliable)
8
idiosyncratic(adjective, unusual, wild, strange, usual)
8
impulsive(adjective, cross, unusual, careless, lively)
7
anomalous(adjective, unusual, wild, strange, crazy)
7
changeful(adjective, careless, unstable, unreasonable, irregular)
7
frivolous(adjective, careless, unreasonable, impulsive)
7
giddy(adjective, weak, careless, silly, uncertain)
7
irresponsible(adjective, wild, silly, foolish, unstable)
7
oddball(noun, adjective, unusual, wild, strange)
7
rambling(adjective, irregular, unsettled, deviation)
7
roving(adjective, irregular, unreliable, lost)
7
unsure(adjective, loose, doubtful, vague, hesitant)
6
crotchety(adjective, careless, unstable, unreasonable)
6
meandering(adjective, irregular, unsettled, crooked)
6
nomadic(adjective, irregular, unreliable, motion)
6
quicksilver(adjective, lively, changeable, indecisive)
6
shifty(adjective, weak, uncertain, sensitive, doubtful)
6
undirected(adjective, irregular, unreliable, deviation)
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APASmart Define. (2016). erratic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/erratic/thesaurus/synonyms
ChicagoSmart Define. 2016. "erratic thesaurus" https://smartdefine.org/erratic/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, erratic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/erratic/thesaurus/synonyms>.
MLASmart Define. "erratic thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/erratic/thesaurus/synonyms>