23 entries under crazy topic. ×

11
fatuous(adjective, silly, foolish, stupid)
5
silly(adjective, ability, foolish, stupid)
4
harebrained(adjective, ability, foolish, vague)
2
dull(simple, silly, foolish, stupid)
2
dumb(foolish, stupid, insane, unintelligent)
2
foolish(silly, stupid, insane, unintelligent)
2
idiotic(adjective, silly, foolish, stupid)
2
imbecilic(adjective, foolish, innocent, vague)
2
moronic(adjective, dull, simple, slow, silly)
2
senseless(foolish, impulsive, insane, unintelligent)
2
thick-witted(foolish, insane)
2
unintelligent(silly, foolish, stupid, insane)
1
asinine(silly, foolish, insane, unintelligent)
1
batty(foolish, impulsive, insane, impractical)
1
imbecile(dull, simple, silly, foolish)
1
inane(silly, foolish, stupid, insane)
1
lunatic(silly, foolish, insane, unintelligent)
0
daffy(foolish, insane, unintelligent, mindless)
0
daft(foolish, insane)
0
foolhardy(foolish, insane, impractical, half-baked)
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APASmart Define. (2015). birdbrained thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/birdbrained/thesaurus/synonyms
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>