- Definitions|2
- Thesaurus|437
- Abbreviations|0
29 entries under rigid topic. ×
| impenetrable(adjective, close, hard, tough, solid) | |
| compact(adjective, close, set, hard, tough) | |
| close(adjective, set, hard, tough, solid) | |
| dense(adjective, set, hard, tough, firm) | |
| thick(adjective, close, set, hard, tough) | |
| firm(adjective, close, hard, solid, fast) | |
| nonporous(adjective, hard, solid, resistant) | |
| concrete(hard, solid, density) | |
| hard(adjective, set, tough, firm, solid) | |
| heavy(adjective, hard, solid) | |
| solid(adjective, close, set, hard, tough) | |
| substantial(adjective, close, set, hard, tough) | |
| compressed(adjective, set, hard, tough, firm) | |
| concentrated(adjective, set, hard, tough, firm) | |
| condensed(adjective, set, hard, tough, firm) | |
| close-grained(adjective, close, set, hard, tough) | |
| solidified(hard, solid, density) | |
| congealed(hard, solid) | |
| fine-grained(hard, solid) | |
| hardened(hard, solid) |
For more, visit
Impermeable on
Power Thesaurus
| APA | Smart Define. (2015). impermeable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/impermeable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impermeable thesaurus" https://smartdefine.org/impermeable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, impermeable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/impermeable/thesaurus/synonyms>. |
| MLA | Smart Define. "impermeable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/impermeable/thesaurus/synonyms> |