65 entries under changeable topic. ×

18
capricious(adjective, wrong, unusual, foolish, stupid)
13
whimsical(adjective, careless, unstable, unreasonable, surprise)
12
erratic(adjective, careless, unstable, unreasonable, chance)
8
frivolous(adjective, chance, uninformed, indecisive)
7
uncertain(adjective, unusual, irregular, unreliable)
5
careless(adjective, unstable, unreasonable, casual, unpredictable)
5
chancy(adjective, unusual, erratic, random)
5
impulsive(adjective, unusual, careless, unstable, unreasonable)
4
crotchety(adjective, careless, unstable, unreasonable, unpredictable)
4
doubtful(adjective, erratic, random)
4
unpredictable(adjective, unusual, careless, unstable, unreasonable)
4
volatile(adjective, careless, unstable, unreasonable, irregular)
3
fitful(adjective, careless, unstable, unreasonable, irregular)
3
flighty(adjective, careless, unstable, unreasonable)
3
humorsome(adjective, careless, unstable, unreasonable, unpredictable)
3
iffy(adjective, irregular, unpredictable, unreliable)
3
indecisive(adjective, inconsistent, capricious, motiveless)
3
kinky(adjective, unusual, careless, unstable, unreasonable)
2
fluctuating(adjective, erratic, random, capricious)
2
moody(adjective, careless, unstable, unreasonable, unpredictable)
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APASmart Define. (2015). arbitrary thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/arbitrary/thesaurus/synonyms
ChicagoSmart Define. 2015. "arbitrary thesaurus" https://smartdefine.org/arbitrary/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, arbitrary thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/arbitrary/thesaurus/synonyms>.
MLASmart Define. "arbitrary thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/arbitrary/thesaurus/synonyms>