Any of numerous long-tailed rodents of various families (esp. Muridae and Cricetidae) resembling, but larger than, the mouse: rats are very destructive pests and carriers of highly contagious diseases, as bubonic plague and typhus
A mean, worthless fellow; a rascal; a villain; a person without honour or virtue.
Any of an order (Mallophaga) of small, wingless insects with biting mouthparts, that live as external parasites on birds
Any of numerous lice that have chewing mouthparts and feed on the feathers, fur, and skin of birds and mammals.
The definition of a worm is an animal that is slender, soft and often segmented, or an insect larva, or a nasty person, or an unauthorized computer program.
a person who has a nasty or unethical character undeserving of respect
Find another word for louse. In this page you can discover 15 synonyms, antonyms, idiomatic expressions, and related words for louse, like: Hemiptera (Latin), pediculus, mite, insect, cad, cootie, knave, rat, scoundrel, sucking-louse and bird louse.