131 entries under silly topic. ×

3
ludicrous(adjective, dull, weak, simple)
3
mad(adjective, weak, simple, foolish)
3
meaningless(adjective, dull, simple, slight)
3
simple-minded(adjective, dull, simple, slow)
3
thick-headed(adjective, dull, foolish, stupid)
3
uneducated(adjective, stupid, green, fat)
2
absurd(adjective, weak, simple, foolish)
2
birdbrained(foolish, stupid, crazy, insane)
2
crazy(adjective, weak, simple, foolish)
2
daffy(adjective, weak, simple, slow)
2
dimwitted(adjective, dull, simple, foolish)
2
dippy(weak, simple, foolish, thoughtless)
2
ill-considered(adjective, weak, simple, foolish)
2
illogical(adjective, simple, stupid, insignificant)
2
inattentive(adjective, foolish, senseless, unnecessary)
2
incongruous(adjective, stupid, insignificant, unreasonable)
2
inexperienced(adjective, stupid, green, fat)
2
inexpert(adjective, stupid, green, fat)
2
injudicious(adjective, weak, simple, mind, think)
2
insane(weak, simple, foolish, crazy)
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>