laugh away vs repudiate

laugh away

verb
  • To dismiss something as unimportant. 

  • To pass the time with frivolous and amusing conversation. 

repudiate

verb
  • To refuse to have anything to do with; to disown. 

  • To be repudiated. 

  • To reject the truth or validity of; to deny. 

  • To refuse to pay or honor (a debt). 

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