- Definitions|2
- Thesaurus|1.7k
- Abbreviations|0
129 entries under adjective topic. ×
| malefic(negative, harmful, threatening, injurious) | |
| pestilent(harmful, dangerous, fatal, poisonous) | |
| vicious(mean, bad, evil, nasty) | |
| devastating(bad, evil, wicked, harmful) | |
| disturbing(harmful, threatening, unfavorable, ominous) | |
| malevolent(mean, bad, wrong, evil) | |
| sinister(bad, evil, nasty, negative) | |
| unfavorable(harmful, threatening, damaging, ominous) | |
| cataclysmic(harmful, injurious, damaging, deadly) | |
| nasty(mean, evil, cruel, hateful) | |
| pestiferous(bad, evil, harmful, injurious) | |
| unhealthful(offensive, foul, disgusting, unhealthy) | |
| pestilential(bad, evil, harmful, injurious) | |
| crippling(harmful, injurious, damaging, destructive) | |
| destroying(harmful, damaging) | |
| dire(nasty, harmful, injurious, damaging) | |
| mephitic | |
| mortal(bad, evil, harmful, injurious) | |
| negative(harmful, injurious, unfavorable, disparaging) | |
| nocent(negative, distressing, harmful, injurious) |
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| APA | Smart Define. (2016). deleterious thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/deleterious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "deleterious thesaurus" https://smartdefine.org/deleterious/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, deleterious thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/deleterious/thesaurus/synonyms>. |
| MLA | Smart Define. "deleterious thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/deleterious/thesaurus/synonyms> |