| empty(adjective, unsubstantial) | |
| erroneous | |
| exanimate(adjective, supernatural) | |
| exsanguinous(thin, dead, pale, wasted, bony) | |
| extramundane(adjective, obscure, dark, superior, supernatural) | |
| extrasensory(adjective, obscure, dark, superior, supernatural) | |
| fabulous(adjective, obscure, dark, superior, mysterious) | |
| faint(adjective, dull, light, soft, poor) | |
| fairy(obscure, dark, superior, mysterious, supernatural) | |
| fallacious | |
| false | |
| fantastical | |
| feeble(adjective, dull, light, soft, poor) | |
| frightening(adjective, awful, terrible, unreasonable, shocking) | |
| frightful(awful, terrible, shocking, upsetting, frightening) | |
| full-colored(adjective, colorful) | |
| funereal(awful, terrible, unreasonable, shocking, inappropriate) | |
| garish(adjective, colorful) | |
| gaudy(adjective, colorful) | |
| ghost-like(adjective, demon) |
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| APA | Smart Define. (2015). spectral thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/spectral/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "spectral thesaurus" https://smartdefine.org/spectral/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, spectral thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/spectral/thesaurus/synonyms>. |
| MLA | Smart Define. "spectral thesaurus" 15 July 2015. Web. 23 September 2026. <https://smartdefine.org/spectral/thesaurus/synonyms> |