acrawl vs filthy

acrawl

adj
  • Full of or covered (with something that crawls or moves as if crawling). 

  • Crawling. 

filthy

adj
  • Covered with filth; very dirty. 

  • Obscene or offensive. 

  • Very unpleasant or disagreeable. 

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

  • To cover in filth. 

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