95 entries under dull topic. ×

36
foolish(adjective, simple, slight, careless)
31
stupid(adjective, careless, wild, silly)
20
idiotic(adjective, simple, wild, strange)
20
senseless(adjective, careless, value, wild)
19
vacuous(adjective, simple, careless, silly)
19
mindless(adjective, simple, slow, careless)
19
nonsensical(adjective, simple, value, wild)
18
ludicrous(adjective, simple, wild, strange)
13
moronic(adjective, simple, slow, silly)
13
dumb(adjective, simple, slow, silly)
13
imbecilic(adjective, simple, slow, silly)
11
laughable(adjective, strange, silly, stupid)
11
mad(adjective, simple, wild, silly)
11
meaningless(adjective, simple, slight, use)
11
pointless(adjective, weak, simple, value)
10
jejune(adjective, weak, soft, slight)
9
brainless(adjective, simple, slow, silly)
8
futile(adjective, simple, value, silly)
8
simple(adjective, slight, slow, silly)
7
unintelligent(adjective, simple, slight, silly)
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APASmart Define. (2015). inane thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/inane/thesaurus/synonyms
ChicagoSmart Define. 2015. "inane thesaurus" https://smartdefine.org/inane/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, inane thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/inane/thesaurus/synonyms>.
MLASmart Define. "inane thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/inane/thesaurus/synonyms>