Definition of "lousy"

lousy

/ˈlaʊ.zi/

adjective
comparative lousier, superlative lousiest
1. (colloquial) Remarkably bad; of poor quality.
2. (colloquial) Dirty or untidy.
3. (colloquial) Unwell; under the weather.
4. (colloquial) Underhanded; mean; contemptible.
5. Infested with lice.
6. (colloquial, usually with with) Filled or packed (with something, usually bad).
  Quotations
  The benignant influence crept like gas through the Row. […] And triangulation might possibly have located it in the Palace Flophouse and Grill. Certainly the Palace was lousy with it. Mack and the boys were charged. Jones was seen to leap from his chair only to do a quick tap dance and sit down again.
  1945, John Steinbeck, Cannery Row
  [I talked to] Annabeth about the Greek gods who hung out in New York and made her life difficult. Apparently North America was lousy with ancient gods. We had a full-blown infestation.
  2016, Rick Riordan, The Hammer of Thor, page 6