transitive verb
Etymology: trump (III)
1. : to concoct especially with intent to deceive : fabricate , invent
trump up extra tasks to keep the children busy — Gertrude H. Hildreth
trump up false charges of treason — R.A.Billington
2. archaic : to cite as support for an action or claim : allege
necessity is trumped up for a plea — Samuel Palmer
3. : to call forth by an act of will : evoke , summon
never able to trump up the courage to have a showdown — Mary B. Miller