- 1 very bad synonym awful, terrible What lousy weather! I've had a lousy day. She felt lousy (= sick).
- 2 [only before noun] used to show that you feel annoyed or insulted because you do not think that something is worth very much All she bought me was this lousy T-shirt. He offered me a lousy $100 for it.
- 3 lousy with something/somebody having too much of something or too many people This place is lousy with tourists in August.
NAmE//ˈlaʊzi//(informal) (lousier, lousiest)