3
jejune
3
moony(adjective, ignore, forget, vague, absent)
3
moronic(adjective, simple, slow, foolish, stupid)
3
nonsensical
3
oblivious(adjective, ignore, careless, forget, remote)
3
rattle-brained
3
reckless(careless, silly, stupid, thoughtless, unthinking)
3
vacillating(adjective, capricious)
3
vague(adjective, ignore, careless, forget, apathetic)
3
wayward(adjective, capricious)
2
absurd
2
amorphous
2
cockamamie(extraordinary, amazing, dubious, astonishing, incredible)
2
cuckoo
2
dazed
2
fatuous
2
feeble-minded(adjective, simple, slow, foolish, stupid)
2
flibbertigibbet
2
fly-by-night(adjective, careless, immoral, thoughtless, reckless)
2
gaga(adjective, ability, informal)
11 years ago|11k views|share |citing 
APASmart Define. (2015). scatterbrained thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/scatterbrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "scatterbrained thesaurus" https://smartdefine.org/scatterbrained/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, scatterbrained thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/scatterbrained/thesaurus/synonyms>.
MLASmart Define. "scatterbrained thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/scatterbrained/thesaurus/synonyms>