{v.} To make up (something untrue); invent in the mind. * /Every time Tom is late getting home he trumps up some new excuse./ * /The Russians were afraid he was a spy, so they arrested him on a trumped-up charge and made him leave the country./
TRUMP UP
Meaning of TRUMP UP in English
Slang English vocab. Английский сленговый словарь. 2012