Noun which may take the genitive case particle 'no', Taru adjective, Adverb taking the 'to' particle
fair and square; open and aboveboard; bold and forthright
Yojijukugo (four character compound)
ウィルソンさんは彼が正々堂々とやってくれることを望む。Mr Wilson likes him to play square.
Also written 正正堂堂【せいせいどうどう】