patternless vs undevised

patternless

adj
  • That does not cut around a pattern. 

  • That does not belong to a programming or markup pattern. 

  • Without a decorative pattern. 

  • Without a repeating pattern; random. 

undevised

adj
  • That has not been devised. 

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