175 entries under unpredictable topic. ×

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dicey(irregular, unreliable, changeable, erratic)
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directionless(irregular, unreliable)
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disreputable(adjective, easy, fickle, variable)
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expansive(lively, impulsive, changeable, temperamental)
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explosive
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fake(adjective, fickle, variable, undependable)
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fallible(adjective, fickle, variable, undependable)
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fast-talking(lively, changeable)
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flip(lively, changeable)
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flippant(impulsive, explosive)
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fluctuant(irregular, unreliable)
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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, fickle, variable, undependable)
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hot-blooded(impulsive, explosive)
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hot-tempered(impulsive, explosive)
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idiosyncratic(irregular, unreliable)
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implausible(adjective, fickle, variable, undependable)
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imponderable(impulsive, explosive)
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APASmart Define. (2016). inconstant thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/inconstant/thesaurus/synonyms
ChicagoSmart Define. 2016. "inconstant thesaurus" https://smartdefine.org/inconstant/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, inconstant thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/inconstant/thesaurus/synonyms>.
MLASmart Define. "inconstant thesaurus" 4 March 2016. Web. 25 September 2026. <https://smartdefine.org/inconstant/thesaurus/synonyms>