vermin
https://gyazo.com/45e8eeca7842835bc5913b7ff49fbe4a
source: By Fir0002 - Own work, GFDL 1.2
noun treated as plural
wild mammals and birds that are believed to be harmful to crops, farm animals, or game, or that carry disease, e.g., foxes, rodents, and insect pests.
害獣〘ネズミ･イタチなど〙; 害鳥; 害虫〘ハエ･シラミなど〙
parasitic worms or insects.
寄生虫
people perceived as despicable and as causing problems for the rest of society:
｟けなして｠ 社会の害虫, ダニども, ならず者.
e.g. the vermin who ransacked her house.
DERIVATIVES
verminous | ˈvərmənəs | adjective
ORIGIN
Middle English (originally denoting animals such as reptiles and snakes): from Old French, based on Latin vermis ‘worm’.