128 entries under adjective topic. ×

1
touched(wild, silly, foolish, stupid)
1
unbelievable(extraordinary, silly, amazing, ridiculous)
1
unearthly(knowledge, ability)
1
unstable(careless, stupid, immoral, thoughtless)
1
unthinking(careless, stupid, thoughtless, impulsive)
1
unusual(keen, warm, silly, foolish)
1
venturous(careless, wild, bold, thoughtless)
0
bedlamite(keen, warm, silly, foolish)
0
bemused(careless, inconstant, giddy)
0
bird-brained
0
bugged out(expression, stupid, crazy, insane)
0
buggy(silly, foolish, crazy, mad)
0
changeful(careless, inconstant, giddy)
0
crazed(wild, silly, foolish, stupid)
0
demented(wild, silly, foolish, crazy)
0
enthusiastic(keen, warm, silly, foolish)
0
flustered(careless, inconstant, giddy)
0
gung ho(expression, keen, warm, silly)
0
hare-brained
0
irresolute(careless, inconstant, giddy)
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APASmart Define. (2015). harebrained thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/harebrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "harebrained thesaurus" https://smartdefine.org/harebrained/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, harebrained thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/harebrained/thesaurus/synonyms>.
MLASmart Define. "harebrained thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/harebrained/thesaurus/synonyms>