creepy vs unfrightening

creepy

adj
  • Producing an uneasy fearful sensation, as of things crawling over one's skin. 

  • Moving by creeping along. 

  • Feeling an uneasy fearful sensation; creeped out. 

  • Strangely repulsive. 

unfrightening

adj
  • Not frightening. 

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