super vs underwhelming

super

adj
  • better than average, better than usual; wonderful. 

  • Of excellent quality, superfine. 

adv
  • Very; extremely (used like the prefix super-). 

underwhelming

adj
  • Failing to interest; not as exciting as promised or expected. 

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