dinky-di vs truth-telling

dinky-di

adj
  • Honest, on the level. 

  • Genuine, true. 

  • Authentically Australian. 

  • True blue, steadfastly loyal. 

truth-telling

adj
  • Telling the truth; honest, frank. 

noun
  • The act of telling the truth. 

How often have the words dinky-di and truth-telling occurred in a corpus of books? (source: Google Ngram Viewer )