39 entries under substantial topic. ×
| compact(adjective, close, set, strong, hard) | |
| solid(adjective, close, set, hard, firm) | |
| firm(adjective, close, set, hard, solid) | |
| thick(adjective, close, hard, firm, solid) | |
| close(adjective, set, hard, solid, heavy) | |
| packed(adjective, close, set, strong, hard) | |
| congested(adjective, close, solid, short) | |
| crowded(adjective, close, set, solid, heavy) | |
| hard(adjective, set, strong, firm, deep) | |
| impenetrable(adjective, close, set, firm, solid) | |
| impermeable(adjective, close, solid, short) | |
| jam-packed(adjective, close, solid, short) | |
| husky(adjective, strong, hard, deep) | |
| massed(verb, adjective, strong, hard) | |
| rocklike(adjective, strong, hard, firm) | |
| sound(adjective, strong, hard, complete, total) | |
| strong(adjective, set, hard, firm, solid) | |
| tight(adjective, close, strong, hard, solid) | |
| brick wall(expression, adjective, strong, hard) | |
| circumscribed(adjective, close, solid, short) |
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| APA | Smart Define. (2015). consolidated thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/consolidated/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "consolidated thesaurus" https://smartdefine.org/consolidated/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, consolidated thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/consolidated/thesaurus/synonyms>. |
| MLA | Smart Define. "consolidated thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/consolidated/thesaurus/synonyms> |