137 entries under hard topic. ×
| incompliant(adjective, firm, solid, stiff) | |
| indurate(adjective, firm, solid, stiff) | |
| inelastic(adjective, set, tough, firm) | |
| inflexible(adjective, strong, tough, firm) | |
| insensible(adjective, strong, tough, innocent) | |
| iron(adjective, strong, tough, firm) | |
| mechanical(adjective, firm, solid, stiff) | |
| numbed(adjective, firm, solid, stiff) | |
| ossified(adjective, firm, solid, stiff) | |
| petrified(adjective, firm, solid, stiff) | |
| refractory(adjective, set, tough, firm) | |
| resistant(adjective, firm, solid, stiff) | |
| rheumatic(adjective, firm, solid, stiff) | |
| rocklike(adjective, strong, firm, substantial) | |
| secure(adjective, close, strong, firm) | |
| severe(adjective, strong, tough, sturdy) | |
| stable(adjective, close, strong, firm) | |
| starched(adjective, firm, solid, stiff) | |
| stark(adjective, firm, solid, stiff) | |
| steel(adjective, strong, tough, sturdy) |
For more, visit
Thick on
Power Thesaurus
| APA | Smart Define. (2016). thick thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/thick/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "thick thesaurus" https://smartdefine.org/thick/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, thick thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/thick/thesaurus/synonyms>. |
| MLA | Smart Define. "thick thesaurus" 26 February 2016. Web. 24 September 2026. <https://smartdefine.org/thick/thesaurus/synonyms> |