1) Believing 2) Relative of disinformation 
Doublethink is the act of ordinary people simultaneously accepting two mutually contradictory beliefs as correct, often in distinct social contexts. Doublethink is related to, but differs from, hypocrisy and neutrality. Somewhat related but almost the opposite is cognitive dissonance, where contradictory beliefs cause conflict in one`s mind. Doub....
[n] - believing two contradictory ideas at the same time
noun believing two contradictory ideas at the same time
maintaining a contradiction in mind as one speaks the opposite of one's own belief.
the acceptance of two contradictory ideas or beliefs at the same time.