- Definitions|2
- Thesaurus|1.1k
- Abbreviations|0
| baleful(adjective, bad, evil, harmful, injurious) | |
| disagreeable(nasty, unpleasant, horrible, hateful, loathsome) | |
| epidemic | |
| foul(adjective, bad, nasty, offensive, terrible) | |
| fractious | |
| harassing(injurious, damaging, destructive, disorderly, unruly) | |
| hateful(adjective, nasty, offensive, terrible, disgusting) | |
| hurtful(adjective, bad, evil, harmful, injurious) | |
| infected | |
| inimical(injurious, damaging, destructive) | |
| irritable | |
| lethal(adjective, bad, evil, harmful, injurious) | |
| malign(adjective, bad, evil, nasty, terrible) | |
| mischievous(offensive, foul, disgusting, injurious, damaging) | |
| morbific | |
| mortal(adjective, bad, evil, harmful, injurious) | |
| petulant | |
| septic | |
| tiresome | |
| toxicant(adjective, poisonous) |
For more, visit
Pestiferous on
Power Thesaurus
| 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> |