- Definitions|2
- Thesaurus|1.5k
- Abbreviations|0
308 entries under adjective topic. ×
| close-grained(close, set, hard, tough) | |
| clotted(set, solid, heavy, deep) | |
| coagulated(set, solid, heavy, deep) | |
| coldhearted(hard, unfeeling, unsympathetic, prepared) | |
| complicated | |
| confusing | |
| congealed(set, hard, tough, solid) | |
| contemptuous(hard, unfeeling, unsympathetic, prepared) | |
| cruel(hard, unfeeling, unsympathetic, hardened) | |
| curdled(set, solid, heavy, deep) | |
| disdainful(hard, unfeeling, unsympathetic, prepared) | |
| fast | |
| fixed(set, solid, heavy, short) | |
| gelatinous(set, solid, heavy, deep) | |
| gloppy(set, solid, heavy, deep) | |
| gruelling | |
| gummous(set, solid, heavy, deep) | |
| gunky(set, solid, heavy, deep) | |
| habituated(hard, unfeeling, unsympathetic, prepared) | |
| hard-as-nails(hard, unfeeling, unsympathetic, prepared) |
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| APA | Smart Define. (2015). impenetrable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/impenetrable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "impenetrable thesaurus" https://smartdefine.org/impenetrable/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, impenetrable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/impenetrable/thesaurus/synonyms>. |
| MLA | Smart Define. "impenetrable thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/impenetrable/thesaurus/synonyms> |