53 entries under stupid topic. ×

22
frivolous(noun, adjective, slight, ability, careless)
21
silly(adjective, ability, foolish, trivial)
20
giddy(noun, adjective, ability, happy, careless)
16
wild(adjective, careless, foolish, crazy)
13
dizzy(noun, adjective, beat, slang, ability)
11
empty-headed(adjective, slight, ability, careless, silly)
9
irresponsible(adjective, careless, unstable, unsettled)
8
harebrained(adjective, ability, careless, excited, silly)
7
featherbrained(adjective, slight, ability, careless, silly)
6
foolish(adjective, simple, slight, careless, silly)
6
inconsistent(adjective, unstable, unsettled, unreliable)
6
reckless(adjective, careless, wild, foolish)
4
careless(adjective, foolish, unstable, unreasonable)
4
crazy(adjective, beat, simple, careless, wild)
4
irrational(adjective, simple, careless, foolish)
4
witless(careless, unthinking, obtuse, unperceptive)
3
puerile(slight, careless, silly, foolish)
2
brainless(adjective, simple, careless, foolish)
2
inane(slight, careless, trivial, absurd)
2
mindless(careless, unthinking, obtuse, unperceptive)
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APASmart Define. (2015). flighty thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/flighty/thesaurus/synonyms
ChicagoSmart Define. 2015. "flighty thesaurus" https://smartdefine.org/flighty/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, flighty thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/flighty/thesaurus/synonyms>.
MLASmart Define. "flighty thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/flighty/thesaurus/synonyms>