/ ˈlaʊzi; NAmE / adjective ( informal )
1.
very bad
SYN awful , terrible :
What lousy weather!
She felt lousy (= ill) .
2.
[ only before noun ] used to show that you feel annoyed or insulted because you do not think that sth is worth very much :
All she bought me was this lousy T-shirt.
3.
lousy with sth/sb ( NAmE ) having too much of sth or too many people :
This place is lousy with tourists in August.