show (one's) hand

show (one's) hand

To make one's plans, intentions, ideas, or resources known to others, especially those that were previously hidden or kept secret. (Also expressed as "show (one's) cards"; both phrases refer to displaying one's cards ("hand") during a card game.) In business negotiations, it's important that you don't show your hand right away, or you might risk losing out on the best deal possible. Pressure from the government is forcing the notoriously secretive CEO to show his hand regarding his company's tax profile and offshore accounts.
See also: hand, show
Farlex Dictionary of Idioms.

show one's hand

Fig. to reveal one's intentions to someone. (From card games.) I don't know whether Jim is intending to marry Jane or not. He's not one to show his hand. If you want to get a raise, don't show the boss your hand too soon.
See also: hand, show
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

show one's hand

Reveal one's plans, intentions, or resources, especially when they were previously hidden. For example, We have to be careful not to show our hand to our competitors. The hand here refers to a hand of cards, and showing them means turning them face up. [Late 1800s]
See also: hand, show
The American Heritage® Dictionary of Idioms by Christine Ammer.

show your hand

If you show your hand, you let other people see what your position is and what you intend to do. On domestic politics he seemed unwilling to show his hand too clearly. It may be no accident that Manchester United have shown their hand in their attempt to lure David Hirst to Old Trafford. Note: You can replace show with reveal. The Portugal coach has yet to reveal his hand on how many changes he will be making to the team. Note: If you show your hand in a card game, you reveal your cards to another player.
See also: hand, show
Collins COBUILD Idioms Dictionary, 3rd ed.

show your hand (or cards)

disclose your plans.
The image here is of players revealing their cards in a card game.
See also: hand, show
Farlex Partner Idioms Dictionary

show/reveal your ˈhand

(British English) (American English tip your ˈhand) do something which reveals your intentions, plans, etc: The problem is that we can’t say anything to the management without showing our hand, and we wanted to be able to take them by surprise. In court a good lawyer never reveals his hand too soon. OPPOSITE: keep/hold/play your cards close to your chest
These expressions refer to showing your cards (= your hand) in card playing.
See also: hand, reveal, show
Farlex Partner Idioms Dictionary

show (one's) hand

1. Games To display one's cards with faces up.
2. To state one's intentions or reveal one's resources, especially when previously hidden.
See also: hand, show
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • reveal (one's) cards
  • reveal (one's) hand
  • show hand
  • show one's hand
  • show your hand
  • show/reveal your hand
  • show (one's) cards
  • hold (one's) cards close to (one's) chest
  • keep/hold/play your cards close to your chest
  • play (one's) cards close to (one's) chest