- Definitions|2
- Thesaurus|1.1k
- Abbreviations|0
| contaminative | |
| corrupting(harmful, injurious, damaging, destructive, poisonous) | |
| cutthroat(adjective, harmful, injurious, damaging, deadly) | |
| dangerous(bad, offensive, foul, disgusting, fatal) | |
| despicable(adjective, nasty, terrible, disgusting, vicious) | |
| detestable(adjective, nasty, offensive, terrible, disgusting) | |
| devastating(adjective, bad, evil, wicked, harmful) | |
| dire(adjective, bad, painful, harmful, injurious) | |
| disadvantageous(injurious, damaging, destructive) | |
| disastrous(adjective, harmful, injurious, damaging, deadly) | |
| disgusting(adjective, bad, nasty, offensive, terrible) | |
| distressing | |
| disturbing | |
| endemic | |
| enraging | |
| epidemial | |
| epiphytotic | |
| eradicative(adjective, harmful, injurious, damaging, deadly) | |
| evil(adjective, bad, nasty, terrible, disgusting) | |
| execrable(adjective, nasty, terrible, disgusting, vicious) |
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| APA | Smart Define. (2015). pestiferous thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/pestiferous/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "pestiferous thesaurus" https://smartdefine.org/pestiferous/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, pestiferous thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/pestiferous/thesaurus/synonyms>. |
| MLA | Smart Define. "pestiferous thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/pestiferous/thesaurus/synonyms> |