incredible vs skyly

incredible

adj
  • Marvellous; profoundly affecting; wonderful. 

  • Amazing; astonishing; awe-inspiring. 

  • Too implausible to be credible; beyond belief; unbelievable. 

skyly

adj
  • Of, resembling, or relating to the sky; celestial 

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