Definition
To create falsely, to fabricate (particularly applied to accusations, (legal) charges or evidence).
to heavily publicise, promote or market a product.
In Context
- "His electoral "campaign" to date has included attempts to trump up criminal charges against his opponents."
- "Those of the men who had swapped horses with passing drovers, without the exchange of receipts, were busy all afternoon trumping up witnesses."
- "We don't often trump up products purely for the virtue of being "new"."