butt-ugly vs squalid

butt-ugly

adj

  • Extremely ugly. 

squalid

adj

  • Extremely dirty and unpleasant. 

  • Showing a contemptible lack of moral standards. 

noun

  • Any member of the family Squalidae of dogfish sharks. 

How often have the words butt-ugly and squalid occurred in a corpus of books? (source: Google Ngram Viewer )