87 entries under unpredictable topic. ×

13
unsteady(adjective, rough, active, unstable, unsettled)
12
desultory(adjective, mean, disorder, rough, insignificant)
12
inconsistent(adjective, excellent, extraordinary, strange, uncertain)
11
unreliable(adjective, unstable, doubtful, unsettled, vague)
10
unstable(adjective, lively, uncertain, active, unsettled)
9
fickle(adjective, lively, uncertain, active, unstable)
9
fluctuating(adjective, rough, lively, active, unstable)
9
unsettled(adjective, unstable, doubtful, vague, hesitant)
8
rambling(adjective, strange, fantastic, detached, improper)
7
shifting(adjective, strange, unstable, fantastic, unsettled)
7
volatile(adjective, lively, active, unstable, unsettled)
6
flighty(adjective, lively, unstable, unsettled)
6
mercurial(adjective, lively, uncertain, active, unstable)
6
undependable(adjective, unstable, unsettled, unreliable)
6
wavering(adjective, unstable, doubtful, unsettled, vague)
6
wayward(adjective, unreliable, motiveless)
5
varying(adjective, unstable, unsettled, unreliable)
4
impulsive(adjective, lively, active, unstable, chance)
4
irresolute(adjective, unstable, doubtful, unsettled, vague)
4
mutable(adjective, unstable, unsettled, unreliable)
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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>