fair and square

US /fer ənd skwer/
UK /fer ənd skwer/
"fair and square" picture
1.

光明正大, 公平公正

in a just and honest way; without cheating or deception

:
He won the competition fair and square.
光明正大地赢得了比赛。
We beat them fair and square, there's no doubt about it.
我们光明正大地击败了他们,毫无疑问。