4
dizzy(adjective, scatterbrained, flighty)
3
bird-brained
3
empty-headed
3
rattle-brained
3
scatterbrained
3
silly
2
addle-pated
2
brainless
2
fatuous
2
feeble-minded
2
flighty
2
foolish
2
frivolous
2
giddy
2
hare-brained
2
imbecilic
2
moronic
2
obtuse
2
simple-minded
2
stupid
15 years ago|1.4k views|share |citing 
APASmart Define. (2011). feather-brained thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/feather-brained/thesaurus/synonyms
ChicagoSmart Define. 2011. "feather-brained thesaurus" https://smartdefine.org/feather-brained/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2011, feather-brained thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/feather-brained/thesaurus/synonyms>.
MLASmart Define. "feather-brained thesaurus" 29 May 2011. Web. 21 September 2026. <https://smartdefine.org/feather-brained/thesaurus/synonyms>