4
inconsistent(adjective, simple, wrong, silly, foolish)
4
infatuated(misjudgment, credulity)
4
numb(senseless, numb)
4
pillock
4
poor fish(noun, expression, idiom)
4
pudding head(noun, expression, idiom)
4
puerile(adjective, dull, careless, silly, foolish)
4
shallow(adjective, dull, simple, slow, silly)
4
simpleminded(adjective, dull, simple, silly, foolish)
4
soporific(adjective, dull, flat, ordinary, dry)
4
trivial(adjective, dull, simple, offensive, rude)
4
unperceptive(adjective, sharp, rough, careless, thoughtless)
4
vacant(adjective, dull, wrong, indifferent, silly)
4
weak(adjective, dull, simple, slow, silly)
4
wooden-headed
3
bootless(adjective, weak, idle, useless, incompetent)
3
sottish
3
Boeotian
3
addled
3
blank(adjective, expressionless)
10 years ago|55k views|share |citing 
APASmart Define. (2016). stupid thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/stupid/thesaurus/synonyms
ChicagoSmart Define. 2016. "stupid thesaurus" https://smartdefine.org/stupid/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, stupid thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/stupid/thesaurus/synonyms>.
MLASmart Define. "stupid thesaurus" 2 April 2016. Web. 23 September 2026. <https://smartdefine.org/stupid/thesaurus/synonyms>