- Definitions|2
- Thesaurus|357
- Abbreviations|0
20 entries under unsubstantial topic. ×
| spectral(adjective, heavenly, airy, shadowy, insensible) | |
| phantasmal(adjective, unreal, shadowy, theoretical, ghastly) | |
| immaterial(adjective, form, heavenly, airy, insensible) | |
| illusory(adjective, unreal, shadowy, theoretical, ghastly) | |
| unreal | |
| unsubstantial(adjective, fantastic, heavenly, unreal, theoretical) | |
| chimerical | |
| ethereal(adjective, supernatural, heavenly, ghostly) | |
| impalpable(adjective, heavenly, incorporeal, nonmaterial) | |
| intangible(adjective, heavenly, incorporeal, nonmaterial) | |
| vacant | |
| empty | |
| inessential | |
| insignificance | |
| nonexistence | |
| null | |
| tenuous | |
| unconcrete | |
| vacuous | |
| weightless |
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| APA | Smart Define. (2015). apparitional thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/apparitional/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "apparitional thesaurus" https://smartdefine.org/apparitional/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, apparitional thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/apparitional/thesaurus/synonyms>. |
| MLA | Smart Define. "apparitional thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/apparitional/thesaurus/synonyms> |