- Definitions|2
- Thesaurus|885
- Abbreviations|0
67 entries under adverb topic. ×
| unbearably | |
| unpleasantly | |
| unspeakably | |
| upsettingly | |
| vilely | |
| wickedly | |
| worryingly |
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| APA | Smart Define. (2016). frightening thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/frightening/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "frightening thesaurus" https://smartdefine.org/frightening/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, frightening thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/frightening/thesaurus/synonyms>. |
| MLA | Smart Define. "frightening thesaurus" 23 March 2016. Web. 29 September 2026. <https://smartdefine.org/frightening/thesaurus/synonyms> |