fair and square vs unfair

fair and square

adv
  • In all fairness; equitably. 

  • Within the applicable rules. 

  • Totally fairly and undoubtedly. 

unfair

adj
  • not fair, unjust 

  • sorrowful; sad 

How often have the words fair and square and unfair occurred in a corpus of books? (source: Google Ngram Viewer )