- Definitions|2
- Thesaurus|437
- Abbreviations|0
60 entries under tight topic. ×
| impenetrable(adjective, close, hard, tough, solid) | |
| compact(adjective, close, set, hard, tough) | |
| hermetic(adjective, proof, impervious, impenetrable) | |
| waterproof(adjective, water, proof, impervious) | |
| close(adjective, set, hard, tough, solid) | |
| dense(adjective, set, hard, tough, firm) | |
| sealed(adjective, proof, impervious, impenetrable) | |
| thick(adjective, close, set, hard, tough) | |
| watertight(adjective, proof, impervious, impenetrable) | |
| airtight(adjective, proof, impervious, impenetrable) | |
| firm(adjective, close, hard, solid, fast) | |
| hard(adjective, set, tough, firm, solid) | |
| proof(adjective, impervious, hermetic) | |
| pressure-tight(adjective, proof, impervious, hermetic) | |
| solid(adjective, close, set, hard, tough) | |
| substantial(adjective, close, set, hard, tough) | |
| air-tight(adjective, proof, impervious, hermetic) | |
| compressed(adjective, set, hard, tough, firm) | |
| condensed(adjective, set, hard, tough, firm) | |
| congested(adjective, close, solid, short, substantial) |
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| 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> |