150 entries under unpredictable topic. ×

8
sprightly(adjective, pleasure, happy, lively, glad)
8
vaporous(adjective, unstable, changeable, airy)
7
fiery(adjective, passionate, wild, nervous, fierce)
7
playful(adjective, pleasure, happy, silly, glad)
7
tense(adjective, anxious, nervous, unstable, worried)
6
ticklish(adjective, change, continue, difficult, delicate)
6
eccentric(irregular, unreliable, caprice)
6
fluid(adjective, unstable, unsettled, unreliable)
6
protean(adjective, unstable, unsettled, unreliable)
5
careless(adjective, unstable, unreasonable, changeable)
5
charged(adjective, unstable)
5
gaseous(adjective, impulsive, changeable, explosive)
5
hot-blooded(adjective, passionate, heated, fiery)
5
impatient(adjective, passionate, nervous, sensitive, unstable)
5
petulant(adjective, delicate, passionate, sensitive, unstable)
5
quicksilver(lively, changeable, indecisive, inconsistent)
5
rambling(adjective, irregular, unreliable, motiveless)
5
stormy(adjective, unstable, unsettled, heated)
3
crotchety(adjective, careless, unstable, unreasonable, impulsive)
3
eruptive
10 years ago|23k views|share |citing 
APASmart Define. (2016). volatile thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/volatile/thesaurus/synonyms
ChicagoSmart Define. 2016. "volatile thesaurus" https://smartdefine.org/volatile/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, volatile thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/volatile/thesaurus/synonyms>.
MLASmart Define. "volatile thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/volatile/thesaurus/synonyms>