- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
157 entries under adjective topic. ×
| evil(mysterious, threatening, nefarious, spooky) | |
| extreme | |
| forbidding(evil, mysterious, threatening, nefarious) | |
| foul(evil, mysterious, threatening, nefarious) | |
| frowning(evil, mysterious, threatening, nefarious) | |
| full of twists and turns(expression, idiom, difficult, complex) | |
| glowering(evil, mysterious, threatening, nefarious) | |
| glum(evil, mysterious, threatening, nefarious) | |
| hellish(evil, mysterious, threatening, nefarious) | |
| horrible(evil, mysterious, threatening, nefarious) | |
| immoral(evil, mysterious, threatening, nefarious) | |
| imperceptible(insubstantial, immaterial, incorporeal) | |
| imperceptive(obscure, difficult, uncertain, unclear) | |
| inconceivable | |
| infamous(evil, mysterious, threatening, nefarious) | |
| infernal(evil, mysterious, threatening, nefarious) | |
| inkhorn | |
| nasty(evil, mysterious, threatening, nefarious) | |
| nefarious(evil, mysterious, threatening, spooky) | |
| not known(expression, evil, deep, mysterious) |
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| APA | Smart Define. (2015). abstruse thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/abstruse/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "abstruse thesaurus" https://smartdefine.org/abstruse/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, abstruse thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/abstruse/thesaurus/synonyms>. |
| MLA | Smart Define. "abstruse thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/abstruse/thesaurus/synonyms> |