
IdiomDaily Life
English
a trump card
Meaning: A decisive advantage kept in reserve.
Example: “Her knowledge of the local market was the trump card in the negotiation.”
Origin: In card games, the trump suit beats all others; "trump" comes from "triumph." The figurative use is recorded from the 19th century.
Equivalents in other languages
Russian: козырная карта (kozyrnaya karta) Literally: Trump card
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