494 entries under adjective topic. ×
| inimical(negative, harmful, injurious, damaging) | |
| maleficent | |
| odious(person, tough, offensive, dark) | |
| perfidious(false, corrupt, dishonest, immoral) | |
| repulsive(person, evil, feelings) | |
| shadowy(sorrow, depress, sadness, emotion) | |
| shocking(appearance, offensive, unpleasant, awful) | |
| uncanny(bad, awful, disgusting, sinful) | |
| underhand(false, immoral, deceitful, lying) | |
| unpleasant(person, mean, hard, severe) | |
| unprincipled(false, corrupt, dishonest, immoral) | |
| woeful(evil, nasty, sad, unhappy) | |
| Mephistophelian | |
| abject(sad, unhappy, unpleasant, woe) | |
| abominable | |
| apocalyptic(nasty, menacing) | |
| blackened | |
| cloudy(sorrow, depress, sadness, emotion) | |
| daunting(person, feelings) | |
| demonic |
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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> |