the.com/trump card
The one fact or favor you hide until losing becomes unacceptable.
means A playing card (or argument, resource, or advantage) held in reserve because it outranks all the others and can be played to win when it matters most.
from From card games, where 'trump' is a suit designated to outrank all others for a given hand — the word itself is a worn-down form of 'triumph,' which in 16th-century English named a card game and then the ranking suit within it. 'Card' was added later to make the figurative sense explicit: the trump card as the decisive, game-winning play held back until needed.
- origin
- From trumps, a card game term beating all suits
- etymology twist
- Comes from triumph, not the surname
- real use
- Works once, loses power the moment revealed
- strategy rule
- Never play it before the stakes peak