shilly-shally vs speak frankly

shilly-shally

adj

  • Indecisive; wavering. 

verb

  • To vacillate. 

  • To procrastinate. 

noun

  • Indecision; irresolution. 

speak frankly

How often have the words shilly-shally and speak frankly occurred in a corpus of books? (source: Google Ngram Viewer )