above-board /əˈbʌvˌbɔɹd/adjective 1adverb 1above board prepositional phrase 2 adjective1 •In open sight; without trick, concealment, or deception. adverb1 •Honestly; openly. above board prepositional phrase2 •Openly, without deceit.'[…] And he explained this business of confidential commissions?' / 'Yes, he did. And it seemed to turn out quite respectable and above board.' Mrs Meatyard considered. 'Or almost above board. — 2001 •Honestly, reputably.They conducted the negotiations completely above board.