- Definitions|1
- Thesaurus|203
- Abbreviations|0
84 entries under adverb topic. ×
| gravely | |
| grievously | |
| hazily | |
| heavily | |
| hermetically | |
| inconceivably | |
| inexplicably | |
| murkily | |
| perplexingly | |
| tightly | |
| unbeatably | |
| unintelligibly | |
| aimlessly | |
| ambiguously | |
| arcanely | |
| backbreakingly | |
| brokenly | |
| callously | |
| chaotically | |
| closely |
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| APA | Smart Define. (2013). impenetrably thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/impenetrably/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "impenetrably thesaurus" https://smartdefine.org/impenetrably/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2013, impenetrably thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/impenetrably/thesaurus/synonyms>. |
| MLA | Smart Define. "impenetrably thesaurus" 17 June 2013. Web. 28 September 2026. <https://smartdefine.org/impenetrably/thesaurus/synonyms> |