lousy vs unvalued

lousy

adj
  • Remarkably bad; of poor quality. 

  • Infested with lice. 

  • Unwell; under the weather. 

  • Dirty or untidy. 

  • Underhanded; mean; contemptible. 

  • Filled or packed (with something, usually bad). 

unvalued

adj
  • Not considered to be of worth; deemed valueless. 

  • Not having been valued or appraised. 

How often have the words lousy and unvalued occurred in a corpus of books? (source: Google Ngram Viewer )