- Definitions|2
- Thesaurus|1.5k
- Abbreviations|0
125 entries under dense topic. ×
| dusky(dark, gloomy, cloudy, misty) | |
| frequent | |
| full(profuse, packed, crowded, jam-packed) | |
| generous | |
| gloomy(dark, cloudy, misty, impervious) | |
| inspissated | |
| like sardines(expression, profuse) | |
| localized | |
| multitudinous | |
| narrow(adjective, close, solid, short, substantial) | |
| numerous | |
| packed in(expression, adjective, solid, packed) | |
| packed together(expression, adjective, solid, compressed) | |
| populated | |
| populous | |
| pressed(adjective, solid, tight, compressed) | |
| profuse | |
| replete | |
| restricted(adjective, close, solid, short, substantial) | |
| several |
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| APA | Smart Define. (2015). impenetrable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/impenetrable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impenetrable thesaurus" https://smartdefine.org/impenetrable/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, impenetrable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/impenetrable/thesaurus/synonyms>. |
| MLA | Smart Define. "impenetrable thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/impenetrable/thesaurus/synonyms> |