72 entries under temperamental topic. ×

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lighthearted(lively, unpredictable)
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lugubrious(melancholy, miserable, unstable, downcast)
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mad(lively, unpredictable)
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melancholy(miserable, unstable, downcast)
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morose
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out of sorts(expression, idiom, unstable)
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pensive(melancholy, miserable, unstable, downcast)
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saturnine
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short-fuse(lively, unpredictable)
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sulky
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sullen
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up-and-down(lively, impulsive, unpredictable, uneven)
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APASmart Define. (2016). changeable thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/changeable/thesaurus/synonyms
ChicagoSmart Define. 2016. "changeable thesaurus" https://smartdefine.org/changeable/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, changeable thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/changeable/thesaurus/synonyms>.
MLASmart Define. "changeable thesaurus" 26 February 2016. Web. 25 September 2026. <https://smartdefine.org/changeable/thesaurus/synonyms>