above-board vs singularly

above-board

adv
  • Honestly; openly. 

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

singularly

adv
  • Extremely; remarkably. 

  • In the singular number; in terms of a single thing. 

  • solely; only; uniquely 

  • Strangely; oddly. 

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