494 entries under adjective topic. ×
| poisonous(bad, evil, nasty, harmful) | |
| atrocious(evil, awful, terrible, dreadful) | |
| crooked(false, corrupt, immoral, deceitful) | |
| cruel(person, appearance, terrible, hopeless) | |
| deleterious(bad, evil, nasty, harmful) | |
| diabolic | |
| heinous(evil, vice) | |
| hurtful(bad, nasty, offensive, negative) | |
| ill-omened(black, warning, threatening, unfavorable) | |
| ill-starred(sad, unhappy, unpleasant, woe) | |
| inconsiderate(person, negative, behavior, unwarmhearted) | |
| indecent(person, wicked, unwarmhearted) | |
| iniquitous | |
| merciless(person, evil, negative, behavior) | |
| satanic | |
| stern(person, dark, terrible, negative) | |
| sullen(mean, bad, wrong, evil) | |
| ugly(person, unpleasant, feelings, horrible) | |
| untoward(sad, unhappy, unpleasant, woe) | |
| wretched(sad, unhappy, unpleasant, horrible) |
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| APA | Smart Define. (2016). sinister thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sinister/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "sinister thesaurus" https://smartdefine.org/sinister/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, sinister thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sinister/thesaurus/synonyms>. |
| MLA | Smart Define. "sinister thesaurus" 3 April 2016. Web. 26 September 2026. <https://smartdefine.org/sinister/thesaurus/synonyms> |