Rovian

adjective1

1. •
   Of or pertaining to the political theory that a lie told often enough will be accepted as the truth, and that the truth is no longer relevant to democratic politics.

   • The misdeeds were many, and he was known by all who knew him to be a ridiculous man, but this new plan was too much, was Caligulian, Roveian, and she had no obligation to cooperate. — 2016