Meaning & use
trump card
A decisive advantage or resource held in reserve, used to gain an edge at a crucial moment.
See it in a sentence
The company kept its cheaper manufacturing process as a trump card during price negotiations.
In the final debate, she played her trump card by revealing the leaked documents.
A note on using this word
Trump card comes from card games where a trump suit beats all others, and is now used mainly in its figurative, strategic sense.
Words with a similar meaning
acewinning move
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
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