45 entries under unpredictable topic. ×

26
frivolous(noun, adjective, ability, informal, careless)
22
flighty(noun, adjective, ability, happy, careless)
18
capricious(adjective, weak, careless, excited, silly)
17
fickle(adjective, weak, happy, careless, excited)
10
inconstant(adjective, weak, careless, silly, uncertain)
9
changeable(adjective, weak, careless, excited, silly)
9
light(adjective, happy, wild, silly, foolish)
7
erratic(adjective, weak, careless, silly, uncertain)
4
gay(adjective, happy, silly, foolish, cheerful)
4
mercurial(adjective, unreliable, changeable, uneven)
4
unsettled(adjective, silly, impulsive, uneven)
3
flippant(adjective, impulsive, playful, explosive)
3
impulsive(adjective, unreliable, changeable, erratic)
3
inconsistent(stupid, unreliable, changeable, absurd)
2
variable(adjective, impulsive, unreliable, changeable)
2
playful(adjective, excited, impulsive, fearful)
1
airy(adjective, impulsive, explosive)
1
lively(adjective, happy, excited, unstable, cheerful)
1
lubricious(impulsive, uneven, unbalanced, unhinged)
1
temperamental(impulsive, uneven, unbalanced, unhinged)
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APASmart Define. (2016). giddy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/giddy/thesaurus/synonyms
ChicagoSmart Define. 2016. "giddy thesaurus" https://smartdefine.org/giddy/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, giddy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/giddy/thesaurus/synonyms>.
MLASmart Define. "giddy thesaurus" 24 January 2016. Web. 24 September 2026. <https://smartdefine.org/giddy/thesaurus/synonyms>