filthy vs verminous

filthy

adj
  • Very unpleasant or disagreeable. 

  • Covered with filth; very dirty. 

  • Obscene or offensive. 

verb
  • To make very dirty; to saturate something with dirt. 

  • To cover in filth. 

verminous

adj
  • Actively unpleasant, contemptible, or otherwise reminiscent of vermin. 

  • Infested with vermin. 

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