trump up

/T R AH1 M P AH1 P/
verb
  1. 1

    To create falsely, to fabricate (particularly applied to accusations, (legal) charges or evidence).

    โ€œHis electoral "campaign" to date has included attempts to trump up criminal charges against his opponents.โ€

  2. 2

    Heavily publicise, promote or market a product.

    โ€œWe don't often trump up products purely for the virtue of being "new".โ€

Source: https://en.wiktionary.org/wiki/trump%20up