hideous vs retromingent

hideous

adj
  • Hateful; shocking. 

  • Morally offensive; shocking; detestable. 

  • Extremely or shockingly ugly. 

  • Having a very unpleasant or frightening sound 

retromingent

adj
  • Cowardly. 

  • That urinates backwards; also used of such urination. 

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