Synonyms|220Antonyms|90|Broader|0Narrower|0Related|907
1
fluffy
1
gormless
1
green(adjective, innocent, thick, unfamiliar, unconscious)
1
half-witted
1
illiterate(adjective, innocent, thick, unfamiliar, unconscious)
1
imbecile(dull, simple, silly, foolish, crazy)
1
in the dark(expression, idiom, innocent, unfamiliar, unconscious)
1
inane(silly, foolish, stupid, crazy, insane)
1
inexperienced(adjective, innocent, thick, unfamiliar, unconscious)
1
innocent(adjective, green, thick, unfamiliar, unconscious)
1
insensible(innocent, unfamiliar, unknowing, unaware, uninformed)
1
irresponsible(vague, unreliable, changeable, impractical, erratic)
1
knuckleheaded
1
lamebrain
1
lamebrained(adjective, dull, simple, silly, stupid)
1
light
1
limited
1
ludicrous(silly, foolish, impractical, unintelligent, unaware)
1
lunatic(silly, foolish, crazy, insane, unintelligent)
1
lunkheaded
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ChicagoSmart Define. 2015. "birdbrained thesaurus" https://smartdefine.org/birdbrained/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, birdbrained thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/birdbrained/thesaurus/synonyms>.
MLASmart Define. "birdbrained thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/birdbrained/thesaurus/synonyms>