tip (one's) 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
Farlex Dictionary of Idioms.

tip one's hand

to reveal what one is going to do; to reveal one's secrets. (From card playing.) I didn't tip my hand at all. I left them guessing. They tried to get me to tip my hand.
See also: hand, tip
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

tip one's hand

Accidentally reveal one's intentions, as in He avoided any comments on birthdays for fear of tipping his hand about the surprise party . This idiom probably alludes to holding one's hand in such a way that others can see the cards one is holding. [Colloquial; early 1900s]
See also: hand, tip
The American Heritage® Dictionary of Idioms by Christine Ammer.

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
Farlex Partner Idioms Dictionary

tip one’s hand

tv. to reveal what one is going to do; to reveal one’s secrets. (From card playing.) I didn’t tip my hand at all. I left them guessing.
See also: hand, tip
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions

tip (one's) hand

To reveal one's resources or intentions.
See also: hand, tip
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • beat (one) to the draw
  • Earth to (someone)
  • earth to someone
  • baton
  • hand on the baton
  • give (one) (one's) marching orders
  • give somebody their marching orders
  • give someone their marching orders
  • game is not worth the candle, the
  • get in/into one's hair, to