- Definitions|1
- Thesaurus|406
- Abbreviations|0
| otherworldly(excellent, gentle, marvelous, vague, dreamy) | |
| out of this world(expression, idiom, excellent, gentle, marvelous) | |
| peculiar | |
| pensive(excellent, gentle, marvelous, vague, dreamy) | |
| phantasmagoric(excellent, gentle, marvelous, vague, dreamy) | |
| phantasmagorical(excellent, gentle, marvelous, vague, dreamy) | |
| phantom(adjective, extraordinary, unreasonable, inappropriate, absurd) | |
| preoccupied(gentle, marvelous, vague, dreamy, faraway) | |
| preternatural(adjective, extraordinary, unreasonable, inappropriate, absurd) | |
| quaint | |
| queer | |
| quixotic(excellent, gentle, marvelous, vague, dreamy) | |
| relaxing(excellent, gentle, marvelous, vague, dreamy) | |
| remarkable | |
| repellent | |
| ridiculous(adjective, extraordinary, unreasonable, inappropriate, absurd) | |
| romantic | |
| ruthless | |
| savage | |
| sepulchral(adjective, extraordinary, unreasonable, inappropriate, absurd) |
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| APA | Smart Define. (2013). nightmarish thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/nightmarish/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "nightmarish thesaurus" https://smartdefine.org/nightmarish/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2013, nightmarish thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/nightmarish/thesaurus/synonyms>. |
| MLA | Smart Define. "nightmarish thesaurus" 28 June 2013. Web. 28 September 2026. <https://smartdefine.org/nightmarish/thesaurus/synonyms> |