- Definitions|2
- Thesaurus|246
- Abbreviations|0
| unknowable(solid, dense, unfathomable, impenetrable, unintelligible) | |
| ambiguous(dark, uncertain, mysterious) | |
| analytic(psychic, clairvoyant, telekinetic) | |
| aruspex | |
| aruspice | |
| astrologer | |
| augur | |
| bulletproof | |
| cerebral(psychic, clairvoyant, telekinetic) | |
| close | |
| compact | |
| conjectural | |
| crystal gazer(expression, idiom, oracle) | |
| doomful | |
| doubtful(dark, uncertain, mysterious) | |
| eerie | |
| enigmatical(solid, dense, unfathomable, unintelligible, impassable) | |
| equivocal(dark, uncertain, mysterious) | |
| farsighted(psychic, intuitive, telepathic) | |
| firm |
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| APA | Smart Define. (2015). sibylline thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sibylline/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "sibylline thesaurus" https://smartdefine.org/sibylline/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, sibylline thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sibylline/thesaurus/synonyms>. |
| MLA | Smart Define. "sibylline thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/sibylline/thesaurus/synonyms> |