Above Board Meaning
(idiomatic) Honestly, reputably.
Example: 2001, Michael Inne, A Family Affair, page 82:
' [â€¦] 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.
They conducted the negotiations completely above board.