Synonyms|400Antonyms|146|Broader|0Narrower|0Related|912
2
imbecilic(adjective, simple, slow, silly, foolish)
2
ludicrous
2
mad
2
negligent(adjective, careless, indifferent, foolish, apathetic)
2
nutty
2
obtuse(adjective, simple, slow, stupid, sluggish)
2
puerile
2
random(adjective, capricious)
2
ridiculous
2
screwy(extraordinary, amazing, dubious, astonishing, incredible)
2
shallow(adjective, simple, slow, silly, foolish)
2
simple-minded(adjective, simple, slow, foolish, stupid)
2
stolid(adjective, simple, slow, stupid, sluggish)
2
thoughtless(adjective, careless, indifferent, foolish, immoral)
2
unaccountable(careless, immoral, thoughtless, reckless, negligent)
2
unbelievable(adjective, extraordinary, amazing, incredible)
2
undependable(careless, excited, immoral, thoughtless, unreliable)
2
unpredictable(careless, immoral, thoughtless, reckless, negligent)
2
unreliable(adjective, careless, excited, immoral, thoughtless)
2
vacant
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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>