ingeminate vs rattle off

ingeminate

verb
  • To say (a statement, word etc.) two or more times; to reiterate, to emphasize through repetition. 

adj
  • reiterated 

  • redoubled 

rattle off

verb
  • To list or recite quickly. 

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