52 entries under simple topic. ×

7
imbecile(adjective, dull, silly, foolish)
7
unreasonable(adjective, poor, careless, silly)
7
unwise(adjective, careless, wild, silly)
6
ignorant(adjective, slight, silly, foolish)
6
nuts(adjective, silly, foolish, unsound)
6
witless(adjective, dull, slow, careless)
5
dopey(adjective, dull, silly, foolish)
5
dull(adjective, weak, careless, silly)
4
screwy(adjective, strange, foolish, stupid)
4
trivial(adjective, dull, slight, poor)
3
bonkers(adjective, silly, foolish, unsound)
3
daffy(adjective, silly, foolish, stupid)
3
dense(adjective, dull, slow, silly)
3
half-witted(adjective, dull, slow, silly)
3
inconsistent(adjective, silly, foolish, stupid)
3
lunatic(adjective, silly, foolish, crazy)
3
obtuse(adjective, dull, slow, careless)
2
dim(adjective, dull, weak, slow)
2
slow(adjective, dull, silly, foolish)
2
thick(adjective, dull, slow, silly)
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APASmart Define. (2015). inane thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/inane/thesaurus/synonyms
ChicagoSmart Define. 2015. "inane thesaurus" https://smartdefine.org/inane/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, inane thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/inane/thesaurus/synonyms>.
MLASmart Define. "inane thesaurus" 13 April 2015. Web. 23 September 2026. <https://smartdefine.org/inane/thesaurus/synonyms>