1
blockhead
1
blockheaded
1
blockish
1
boeotian
1
boggy
1
bonehead
1
boneheaded
1
bovine
1
brain-dead
1
bubbleheaded
1
cabalistic
1
cabbalistic
1
caked(adjective, dull, set, flat, solid)
1
choking
1
chumpish
1
cimmerian(adjective, dull, dark, gloomy, dim)
1
clabbered(adjective, set, solid, heavy, deep)
1
clear
1
clear as dishwater(expression, obscure, uncertain, vague, unclear)
1
clotted(adjective, set, solid, heavy, deep)
10 years ago|19k views|share |citing 
APASmart Define. (2016). opaque thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/opaque/thesaurus/synonyms
ChicagoSmart Define. 2016. "opaque thesaurus" https://smartdefine.org/opaque/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, opaque thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/opaque/thesaurus/synonyms>.
MLASmart Define. "opaque thesaurus" 29 February 2016. Web. 23 September 2026. <https://smartdefine.org/opaque/thesaurus/synonyms>