not in the least likely vs phenomenal

not in the least likely

phenomenal

adj
  • Of or pertaining to the appearance of the world, as opposed to the ultimate nature of the world as it is in itself. 

  • Perceptible by the senses through immediate experience. 

  • Very remarkable; highly extraordinary; amazing. 

How often have the words not in the least likely and phenomenal occurred in a corpus of books? (source: Google Ngram Viewer )