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Phrase(s): honest and aboveboard [and] open and aboveboard
Fig. in the open; visible to the public; honest. • Don’t keep it a secret. Let’s make sure that everything is honest and aboveboard. • You can do whatever you wish, as long as you keep it honest and aboveboard. • The inspector had to make sure that everything was open and aboveboard.
McGrawhill's American Idioms And Phrasal Verbs