196 entries under unpredictable topic. ×

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furtive(adjective, fickle, variable, undependable)
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gaseous(impulsive, explosive)
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gay(lively, impulsive, changeable, explosive)
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hallucinatory(adjective, strange, crazy, insane)
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high-strung(unstable, unreliable, fickle)
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hollow(adjective, fickle, variable, undependable)
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hot-blooded(impulsive, explosive)
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hot-tempered(impulsive, explosive)
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implausible(adjective, strange, crazy, insane)
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imponderable(impulsive, explosive)
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irrepressible(lively, changeable, temperamental)
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light(impulsive, explosive)
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lighthearted(lively, changeable, temperamental)
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lively(impulsive, unreliable, changeable, explosive)
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meretricious(adjective, fickle, variable, undependable)
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no-good(loose, unreliable, variable, irresponsible)
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no bargain(expression, loose, unreliable, variable)
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not true(expression, adjective, fickle, variable)
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not trustworthy(expression, adjective, fickle, variable)
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playful(unusual, impulsive, fanciful, explosive)
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APASmart Define. (2016). erratic thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/erratic/thesaurus/synonyms
ChicagoSmart Define. 2016. "erratic thesaurus" https://smartdefine.org/erratic/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, erratic thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/erratic/thesaurus/synonyms>.
MLASmart Define. "erratic thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/erratic/thesaurus/synonyms>