22 entries under scatterbrained topic. ×

18
silly(adjective, slight, ability, foolish, stupid)
14
dizzy(adjective, slang, ability, careless, silly)
13
giddy(adjective, ability, careless, silly, foolish)
11
brainless(adjective, simple, slow, careless, silly)
11
frivolous(adjective, slight, ability, careless, silly)
10
featherbrained(adjective, slight, ability, careless, silly)
10
flighty(adjective, slight, ability, careless, silly)
10
stupid(adjective, simple, careless, indifferent, silly)
8
inane(adjective, slight, silly, foolish, stupid)
8
uneducated(adjective, knowledge, ignorant, untaught)
8
vacant(adjective, full, thoughtless, expressionless)
8
vacuous(adjective, careless, indifferent, stupid, full)
7
harebrained(adjective, ability, careless, silly, foolish)
7
ignorant(adjective, slight, stupid, trivial, absurd)
7
illiterate(adjective, ignorant, untaught, flighty)
4
untaught(adjective, ignorant, flighty, unschooled)
3
know-nothing(adjective, ignorant, untaught, flighty)
3
unschooled(adjective, ignorant, untaught, flighty)
2
skittish(adjective, flighty)
1
capricious(adjective, careless, silly, unstable, unreliable)
<12>
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APASmart Define. (2015). empty-headed thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/empty-headed/thesaurus/synonyms
ChicagoSmart Define. 2015. "empty-headed thesaurus" https://smartdefine.org/empty-headed/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, empty-headed thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/empty-headed/thesaurus/synonyms>.
MLASmart Define. "empty-headed thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/empty-headed/thesaurus/synonyms>