aboveboard

Above the board or table. Hence: in open sight; without trick, concealment, or deception. "Fair and aboveboard." Burke. Note: This expression is said by Johnson to have been borrowed from gamesters, who, when they change their cards, put their hands under the table.

Source: Webster's Revised Unabridged Dictionary (1913), United States public domain. See methodology for full licensing detail. Word validity for game play may differ from any official game dictionary.