tip your hand

tip (one's) hand

To reveal one's intentions, plans, secrets, or resources. An allusion to letting someone else see the cards one is currently holding (one's "hand"). The foreign leader has definitely tipped his hand when it comes to his country's position in the negotiations. Remember not to tip your hand when you go into the meeting.See also: hand, tip

tip your hand (or mitt)

reveal your intentions inadvertently. US informal This expression is the opposite of keep your cards close to your chest (see card). 1966 Martin Woodhouse Tree Frog We couldn't very well oppose it without tipping our hand. See also: hand, tip