above-board vs ever so

above-board

adv

  • Honestly; openly. 

adj

  • In open sight; without trick, concealment, or deception. 

ever so

adv

  • Very, extremely 

  • Used other than figuratively or idiomatically: see ever, so. 

How often have the words above-board and ever so occurred in a corpus of books? (source: Google Ngram Viewer )