Synonyms|1.3kAntonyms|204|Broader|26Narrower|7Related|804

154 entries under changeable topic. ×

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dour(unstable, temperamental)
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downcast(melancholy, miserable, unstable, temperamental)
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fast-talking(lively, unpredictable)
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featherbrained(adjective, careless, unreliable, variable)
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flexible(adjective, variable, changing, fluctuating)
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flip(lively, unpredictable)
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fluky(chance, risky, random, unplanned)
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from left field(expression, idiom, random)
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gay(lively, impulsive, unpredictable, explosive)
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gloomy(unstable, temperamental)
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glum(unstable, temperamental)
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grumpy(unstable, temperamental)
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hazy(doubtful, vague, hesitant, unsure)
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indistinct(doubtful, vague, hesitant, unsure)
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irrepressible(lively, unpredictable, temperamental)
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lighthearted(lively, unpredictable, temperamental)
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lively(impulsive, unpredictable, unreliable, explosive)
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lugubrious(melancholy, miserable, unstable, temperamental)
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melancholy(miserable, unstable, temperamental, downcast)
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morose(unstable, temperamental)
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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>