137 entries under hard topic. ×

5
impermeable(adjective, close, set, tough)
5
jelled(adjective, set, tough, firm)
5
nonporous(solid, rigid, syrupy, jellied)
5
rough(adjective, strong, simple, tough)
5
tough(adjective, person, set, body, strong)
4
fixed(adjective, strong, firm, solid)
4
hefty(adjective, person, body, strong)
4
impervious(adjective, solid, rigid, dense)
4
rigid(adjective, strong, tough, firm)
3
compacted(adjective, strong, firm, solid)
3
harsh(adjective, strong, simple, tough)
3
solidified(adjective, set, tough, firm)
3
wooden(adjective, firm, solid, stiff)
2
massed(adjective, strong, full, compact)
2
rigorous(adjective, strong, tough, sturdy)
2
robust(adjective, person, body, strong)
2
sound(adjective, strong, substantial, compact)
2
starchy(adjective, firm, solid, stiff)
2
sturdy(adjective, person, close, set, body)
2
tense(adjective, close, firm, solid)
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APASmart Define. (2016). thick thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/thick/thesaurus/synonyms
ChicagoSmart Define. 2016. "thick thesaurus" https://smartdefine.org/thick/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, thick thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/thick/thesaurus/synonyms>.
MLASmart Define. "thick thesaurus" 26 February 2016. Web. 23 September 2026. <https://smartdefine.org/thick/thesaurus/synonyms>