- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
62 entries under deep topic. ×
| unearthly(obscure, mysterious, abstract, theoretical) | |
| unknowable(strange, unknown, spiritual, curious) | |
| unrevealed(obscure, dark, mysterious, unknown) | |
| weird(obscure, strange, mysterious, unknown) | |
| abysmal(adjective, profound, bottomless, unsounded) | |
| discerning(thoughtful, enlightened, reflective, studious) | |
| eerie(obscure, mysterious) | |
| enlightened(thoughtful, reflective, studious, deep-thinking) | |
| informed(thoughtful, reflective) | |
| insightful(thoughtful, reflective) | |
| knowing(thoughtful, enlightened, reflective, studious) | |
| knowledgeable(thoughtful, cultured, educated, erudite) | |
| not known(expression, adjective, evil, mysterious) | |
| penetrating(thoughtful, reflective) | |
| psychic(obscure, mysterious) | |
| reflective | |
| sagacious(thoughtful, reflective) | |
| secret supernatural(expression, obscure, mysterious) | |
| shrewd(thoughtful, reflective) | |
| thorough(thoughtful, reflective) |
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| APA | Smart Define. (2015). abstruse thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/abstruse/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "abstruse thesaurus" https://smartdefine.org/abstruse/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, abstruse thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/abstruse/thesaurus/synonyms>. |
| MLA | Smart Define. "abstruse thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/abstruse/thesaurus/synonyms> |