1
fool
1
foolhardy(foolish, crazy, insane, rash, risky)
1
frivolous(adjective, simple, slight, silly, foolish)
1
futile(adjective, dull, simple, slow, silly)
1
gauche
1
green
1
groping
1
gullible(adjective, dull, simple, slow, silly)
1
half-assed
1
half-baked(adjective, dull, weak, simple, slight)
1
half-wit(adjective, unintellectual)
1
halfwitted
1
harebrained(weak, simple, silly, foolish, crazy)
1
heedless(adjective, careless, silly, foolish, senseless)
1
idiot
1
ill-advised(dull, weak, simple, silly, foolish)
1
immature(silly, foolish, rash, absurd, risky)
1
imprudent(weak, simple, silly, foolish, thoughtless)
1
inadept
1
inapprehensible
10 years ago|15k views|share |citing 
APASmart Define. (2016). unintelligent thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unintelligent/thesaurus/synonyms
ChicagoSmart Define. 2016. "unintelligent thesaurus" https://smartdefine.org/unintelligent/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, unintelligent thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unintelligent/thesaurus/synonyms>.
MLASmart Define. "unintelligent thesaurus" 24 March 2016. Web. 28 September 2026. <https://smartdefine.org/unintelligent/thesaurus/synonyms>