- Definitions|2
- Thesaurus|1.9k
- Abbreviations|0
70 entries under damaging topic. ×
| pestilential(adjective, help, bad, evil, harmful) | |
| sinister(adjective, bad, evil, nasty, negative) | |
| mischievous(adjective, mean, bad, nasty, cruel) | |
| pestiferous(adjective, bad, evil, harmful, injurious) | |
| venomous(adjective, mean, bad, evil, nasty) | |
| noisome(adjective, bad, evil, offensive, immoral) | |
| mortal(adjective, bad, evil, grave, harmful) | |
| devastating(adjective, bad, evil, wicked, dreadful) | |
| disastrous(adjective, bad, wicked, immoral, dreadful) | |
| calamitous(adjective, bad, wicked, immoral, dreadful) | |
| catastrophic(adjective, dreadful, harmful, injurious) | |
| malefic(adjective, negative, grave, harmful, threatening) | |
| cataclysmic(adjective, dreadful, harmful, injurious) | |
| iniquitous(adjective, bad, corrupt, immoral, distressing) | |
| internecine(adjective, violent, cruel, harmful, injurious) | |
| sinful(adjective, bad, evil, nasty, harsh) | |
| corroding(injurious, destructive) | |
| corrupting(distressing, harmful, injurious, destructive) | |
| crippling(adjective, harmful, injurious, destructive) | |
| cutthroat(adjective, harmful, injurious, deadly) |
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| APA | Smart Define. (2016). pernicious thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/pernicious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "pernicious thesaurus" https://smartdefine.org/pernicious/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, pernicious thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/pernicious/thesaurus/synonyms>. |
| MLA | Smart Define. "pernicious thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/pernicious/thesaurus/synonyms> |