124 entries under hard topic. ×
| petrified(adjective, calm, quiet, strong) | |
| solidified(adjective, set, firm, solid) | |
| stark(adjective, strong, sound, tough) | |
| substantial(adjective, strong, sound, tough) | |
| taut(adjective, strong, secure, rough) | |
| tense(adjective, firm, solid, stiff) | |
| annealed(adjective, firm, solid, stiff) | |
| arthritic(adjective, firm, solid, stiff) | |
| benumbed(verb, adjective, firm, solid) | |
| brick wall(expression, adjective, strong, substantial) | |
| brittle(adjective, firm, solid, stiff) | |
| buckram(adjective, firm, solid, stiff) | |
| bullhead(adjective, mean, tough, harsh) | |
| chilled(adjective, firm, solid, stiff) | |
| cold fish(expression, adjective, mean, stubborn) | |
| compact(adjective, set, strong, firm) | |
| compacted(adjective, strong, substantial, sturdy) | |
| consolidated(adjective, set, solid, heavy) | |
| creaky(adjective, firm, solid, stiff) | |
| dense(adjective, set, strong, firm) |
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| APA | Smart Define. (2016). fixed thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/fixed/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fixed thesaurus" https://smartdefine.org/fixed/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, fixed thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/fixed/thesaurus/synonyms>. |
| MLA | Smart Define. "fixed thesaurus" 16 March 2016. Web. 22 September 2026. <https://smartdefine.org/fixed/thesaurus/synonyms> |