76 entries under hard topic. ×
| jelled(verb, adjective, set, tough) | |
| loud(adjective, sharp, bright, high) | |
| massed(adjective, strong, substantial, compact) | |
| rank(sharp, high, dense, profuse) | |
| rocklike(adjective, strong, firm, substantial) | |
| sharp(adjective, strong, great, severe) | |
| sound(adjective, strong, tough, fit) | |
| sturdy(adjective, strong, tough, solid) | |
| tight(adjective, strong, full, substantial) | |
| tough(adjective, set, strong, firm) | |
| adamantine(adjective, set, strong, firm) | |
| brick wall(expression, adjective, strong, substantial) | |
| callous(adjective, set, strong, firm) | |
| dimensional(adjective, strong, substantial, compact) | |
| fine-grained(tough, solid, rigid, inflexible) | |
| frozen(adjective, compact, dense, rock-hard) | |
| hard-bitten | |
| hard-handed(adjective, set, strong, compact) | |
| hard as nails(expression, adjective, idiom, set, strong) | |
| hulk(adjective, strong, substantial, compact) |
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| APA | Smart Define. (2015). concentrated thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/concentrated/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "concentrated thesaurus" https://smartdefine.org/concentrated/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, concentrated thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/concentrated/thesaurus/synonyms>. |
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