0
brilliant(lively, unpredictable, changeable)
0
capricious(lively, impulsive, unpredictable, changeable, temperamental)
0
changeable(lively, impulsive, unpredictable, uneven, temperamental)
0
effervescent(lively, impulsive, unpredictable, changeable, explosive)
0
elusive(impulsive, unpredictable, explosive)
0
ephemeral(impulsive, unpredictable, explosive)
0
explosive(impulsive, unpredictable)
0
fast-talking(lively, unpredictable, changeable)
0
fleeting(impulsive, unpredictable, explosive)
0
flighty(lively, impulsive, unpredictable, changeable, explosive)
0
flippant(impulsive, unpredictable, explosive)
0
frivolous(impulsive, unpredictable, explosive)
0
fugacious(impulsive, unpredictable, explosive)
0
fugitive(impulsive, unpredictable, explosive)
0
gaga(lively, unpredictable, changeable, temperamental)
0
gaseous(impulsive, unpredictable, explosive)
0
giddy(impulsive, unpredictable, explosive)
0
hot-blooded(impulsive, unpredictable, explosive)
0
hot-tempered(impulsive, unpredictable, explosive)
0
impermanent(impulsive, unpredictable, explosive)
11 years ago|1.8k views|share |citing 
APASmart Define. (2015). up-and-down thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/up-and-down/thesaurus/synonyms
ChicagoSmart Define. 2015. "up-and-down thesaurus" https://smartdefine.org/up-and-down/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, up-and-down thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/up-and-down/thesaurus/synonyms>.
MLASmart Define. "up-and-down thesaurus" 13 April 2015. Web. 28 September 2026. <https://smartdefine.org/up-and-down/thesaurus/synonyms>