above-board vs mightily

above-board

adv
  • Honestly; openly. 

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

mightily

adv
  • Thoroughly; entirely. 

  • Enormously, to a great extent. 

  • In a mighty manner; with strength or force. 

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