12 entries under ability topic. ×

14
silly(adjective, foolish, absurd, giddy)
11
dizzy(adjective, slang, careless, silly)
11
empty-headed(adjective, slight, careless, silly)
10
frivolous(adjective, slight, careless, silly)
10
giddy(adjective, simple, careless, silly)
8
harebrained(adjective, careless, silly, foolish)
6
flighty(adjective, slight, careless, silly)
5
gaga(adjective, informal, careless, foolish)
5
scatterbrained
4
birdbrained(adjective, slang)
4
frothy(adjective, slight, careless, trivial)
1
lighthearted
11 years ago|7.3k views|share |citing 
APASmart Define. (2015). featherbrained thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/featherbrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "featherbrained thesaurus" https://smartdefine.org/featherbrained/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, featherbrained thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/featherbrained/thesaurus/synonyms>.
MLASmart Define. "featherbrained thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/featherbrained/thesaurus/synonyms>