494 entries under adjective topic. ×
| vicious(nasty, unpleasant, negative, wicked) | |
| cat-hearted(person, behavior, unwarmhearted, aroused negative) | |
| cold(person, unwarmhearted) | |
| devilish | |
| dreary(obscure, sad, dark, sorrow) | |
| gruesome(bad, awful, disgusting, sinful) | |
| ill(bad, evil) | |
| infernal | |
| macabre(bad, awful, disgusting, black) | |
| misaffectionate(person, negative, unwarmhearted) | |
| misanthropic(person, negative, unwarmhearted) | |
| nefarious(evil, vice) | |
| obnoxious(evil, rough, nasty, dark) | |
| treacherous(rough, nasty, dark, unpleasant) | |
| unpromising(warning, threatening, unfavorable, desperate) | |
| bleak(appearance, obscure, sad, dark) | |
| diabolical | |
| disconsolate(sad, unhappy, unpleasant, sorrow) | |
| foul(evil, malevolent, vice) | |
| glowering(person, tough, offensive, dark) |
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| APA | Smart Define. (2016). sinister thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sinister/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sinister thesaurus" https://smartdefine.org/sinister/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, sinister thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sinister/thesaurus/synonyms>. |
| MLA | Smart Define. "sinister thesaurus" 3 April 2016. Web. 25 September 2026. <https://smartdefine.org/sinister/thesaurus/synonyms> |