ABOVEBOARD
Source: 566, 567
aboveboard. Aboveboard, ad. without reserve or artifice
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A‐bove″board′ (�), adv. Above the board or table. Hence: in open sight; without trick, concealment, or deception. “Fair and aboveboard.” Burke. ☞ This expression is said by Johnson to have been borrowed from gamesters, who, when they change their cards, put their hands under the table.