77 entries under dull topic. ×

7
opaque(adjective, close, strong, obscure)
7
cloudy(adjective, obscure, property, dirty)
7
foolish(adjective, simple, slow, silly)
7
hazy(adjective, obscure, dirty, gray)
7
mindless(adjective, simple, silly, foolish)
6
soupy(adjective, obscure, dim, dense)
6
vaporous(adjective, obscure, property, dim)
6
weak-minded(adjective, slow, stupid)
6
witless(adjective, simple, slow, silly)
5
brainless(adjective, simple, slow, silly)
5
oafish(adjective, slow, stupid)
4
backward(adjective, simple, slow, silly)
4
idiotic(adjective, simple, slow, silly)
4
ignorant(adjective, simple, slow, silly)
4
murky(adjective, obscure, solid, dim)
4
thick-headed(unintelligent, witless)
3
imbecile(adjective, simple, silly, foolish)
3
imperceptive(adjective, insensitive, simple-minded, dull-witted)
2
dimwitted(adjective, simple, slang, ability)
2
deficient(adjective, simple, flat, poor)
10 years ago|42k views|share |citing 
APASmart Define. (2016). thick thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/thick/thesaurus/synonyms
ChicagoSmart Define. 2016. "thick thesaurus" https://smartdefine.org/thick/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, thick thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/thick/thesaurus/synonyms>.
MLASmart Define. "thick thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/thick/thesaurus/synonyms>