50 entries under lively topic. ×

6
fleet(adjective, sharp, fast, quick)
6
rapid(adjective, sharp, fast, quick)
6
ticklish(adjective, change, continue, difficult, delicate)
5
effervescent(adjective, careless, unstable, unreasonable)
5
expansive(adjective, impulsive, unpredictable, changeable)
5
spirited(adjective, sharp, fast, changeable)
5
sprightly(adjective, sharp, fast, changeable)
5
winged(sharp, fast, velocity, speedy)
4
buoyant(adjective, sharp, changeable, sprightly)
4
elastic(adjective, impulsive, unpredictable, changeable)
4
lubricious(adjective, careless, uncertain, active)
4
resilient(adjective, impulsive, unpredictable, changeable)
4
spry(adjective, sharp, fast, quick)
3
mad(adjective, unpredictable, changeable, temperamental)
3
swift(sharp, fast, velocity, speedy)
2
energetic(sharp, fast, sprightly, supple)
2
flaky(adjective, careless, unstable, unreasonable)
2
flip(adjective, informal, unpredictable, changeable)
2
gaga(adjective, careless, unstable, unreasonable)
2
gay(adjective, impulsive, unpredictable, changeable)
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APASmart Define. (2015). mercurial thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/mercurial/thesaurus/synonyms
ChicagoSmart Define. 2015. "mercurial thesaurus" https://smartdefine.org/mercurial/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, mercurial thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/mercurial/thesaurus/synonyms>.
MLASmart Define. "mercurial thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/mercurial/thesaurus/synonyms>