- Definitions|2
- Thesaurus|1.5k
- Abbreviations|0
possible profanity
373 entries under adjective topic. ×
| ghostly(unusual, wonderful, marvelous, charming) | |
| heartless(mean, bad, wrong, evil) | |
| horrid | |
| impish(wicked, demon, mischievous) | |
| truculent(animal, mean, cruel, vicious) | |
| unfeeling(animal, mean, cruel, vicious) | |
| ungodly | |
| unhallowed(evil, cruel, vile, wicked) | |
| clairvoyant(extraordinary, unusual, wonderful, marvelous) | |
| cold-hearted(bad behavior, aroused negative) | |
| crazy | |
| emotionless(bad behavior, aroused negative) | |
| evil-minded(bad behavior, aroused negative) | |
| fearful | |
| flagituous(bad behavior, aroused negative) | |
| frightful | |
| ghastly | |
| gothly(bad behavior, aroused negative) | |
| haunted(desire, unusual, wonderful, marvelous) | |
| hideous |
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| APA | Smart Define. (2016). fiendish thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fiendish/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fiendish thesaurus" https://smartdefine.org/fiendish/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, fiendish thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fiendish/thesaurus/synonyms>. |
| MLA | Smart Define. "fiendish thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/fiendish/thesaurus/synonyms> |