65 entries under erratic topic. ×

4
mutable(adjective, unstable, unsettled, unpredictable, unreliable)
4
nonuniform(adjective, variable, random, haphazard)
4
vacillating(adjective, unstable, doubtful, unsettled, vague)
3
designless(adjective, careless, insignificant, casual, senseless)
3
fragmentary(adjective, variable, random, haphazard)
3
unpunctual(adjective, variable, random, haphazard)
2
chancy(adjective, doubtful, vague, changeable, unsure)
2
changeful(adjective, unstable, unsettled, unpredictable, unreliable)
2
faltering(adjective, variable, random, haphazard)
1
agitated(adjective, wild, unstable, unsettled, unpredictable)
1
chance(adjective, careless, casual, changeable, secondary)
1
fluid(adjective, unstable, unsettled, unpredictable, unreliable)
1
fluky(chance, casual, changeable, random)
1
iffy(adjective, unusual, uncertain, unstable, doubtful)
1
incalculable(doubtful, vague, hesitant, unreliable, changeable)
1
mobile(adjective, lively, active, unstable, unsettled)
1
protean(adjective, unstable, unsettled, unpredictable, unreliable)
1
touch and go(expression, idiom, doubtful, vague, changeable)
1
unforeseeable(doubtful, vague, hesitant, changeable, unsure)
1
up and down(expression, adjective, idiom, variable)
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APASmart Define. (2016). irregular thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/irregular/thesaurus/synonyms
ChicagoSmart Define. 2016. "irregular thesaurus" https://smartdefine.org/irregular/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, irregular thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/irregular/thesaurus/synonyms>.
MLASmart Define. "irregular thesaurus" 1 April 2016. Web. 22 September 2026. <https://smartdefine.org/irregular/thesaurus/synonyms>