2
evanescent
2
fleeting
2
flighty(unstable, unsettled, variable)
2
fugacious
2
fugitive
2
hit-or-miss(irregular, disturbed, broken, erratic, random)
2
impetuous(passionate, violent, excited, quick, agitated)
2
impulsive(unstable, irregular, quick, unsettled, disturbed)
2
inchoate(adjective, loose, irregular, rambling, incoherent)
2
incoherent(adjective, loose, irregular, rambling, disconnected)
2
inconsonant
2
indecisive(unstable, unsettled, variable, capricious, fluctuating)
2
indiscriminate(erratic, random, haphazard)
2
irresponsible(unstable, unsettled, variable, capricious, fluctuating)
2
mercurial(adjective, unstable, irregular, unsettled, unpredictable)
2
mobile(adjective, unstable, unsettled, unpredictable, unreliable)
2
momentary(adjective, brief, fleeting)
2
mutable(adjective, unstable, unsettled, unpredictable, unreliable)
2
nonuniform(unreliable, uneven, variable, erratic, random)
2
passing
11 years ago|8.8k views|share |citing 
APASmart Define. (2015). spasmodic thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/spasmodic/thesaurus/synonyms
ChicagoSmart Define. 2015. "spasmodic thesaurus" https://smartdefine.org/spasmodic/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, spasmodic thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/spasmodic/thesaurus/synonyms>.
MLASmart Define. "spasmodic thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/spasmodic/thesaurus/synonyms>