Lay one's cards on the table
Meaning
Be honest and reveal your intentions.
Usage
Used in discussions where openness is encouraged.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Card games where players reveal their hands.
Used since the 1800s by gamblers and then politicians.