Synonyms|240Antonyms|92|Broader|3Narrower|1Related|601
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copy
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destabilizing
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disappearing
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effervescent(impulsive, unpredictable, explosive)
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elusive(impulsive, unpredictable, explosive)
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expansive(impulsive, unpredictable, explosive)
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experimental
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expiring
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explosive(impulsive, unpredictable)
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faddish
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flash
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flash in the pan(expression, idiom, brief, transitory, short-lived)
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flasher
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fleeing
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flighty(impulsive, unpredictable, explosive)
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flippant(impulsive, unpredictable, explosive)
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frivolous(impulsive, unpredictable, explosive)
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gaseous(impulsive, unpredictable, explosive)
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gay(impulsive, unpredictable, explosive)
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giddy(impulsive, unpredictable, explosive)
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APASmart Define. (2016). impermanent thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/impermanent/thesaurus/synonyms
ChicagoSmart Define. 2016. "impermanent thesaurus" https://smartdefine.org/impermanent/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, impermanent thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/impermanent/thesaurus/synonyms>.
MLASmart Define. "impermanent thesaurus" 26 February 2016. Web. 20 September 2026. <https://smartdefine.org/impermanent/thesaurus/synonyms>