fair and square adverb 3adjective 1forms 2 adverb3 •Totally fairly and undoubtedly.We won the game fair and square. •Within the applicable rules.They had crawled in and staked the land and stood ready to shoot those of us who came in, fair and square, in the Run. — 1930 •In all fairness; equitably."Have it out with him to-night. Fair and square. Out he goes, Edmund, neck and crop. Out, by thunder." — 1938 adjective1 •Unquestionably fair.It was a fair and square deal. We won. And we won in the Senate. And it's in the bill. And I didn't think we could beat them, but we did. — 1995 formsmore fair and square · most fair and square