charmless vs disagreeable

charmless

adj
  • unpleasant, unappealing, lacking charm 

disagreeable

adj
  • Causing repugnance; unpleasant to the feelings or senses; displeasing. 

noun
  • Something or someone displeasing; anything that is disagreeable. 

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