doublethink noun 1verb 1forms 5 noun1 •The power of holding two contradictory beliefs in one's mind simultaneously and accepting both of them as true or correct; an instance of doing so.The stars can be near or distant, according as we need them. Do you suppose our mathematicians are unequal to that? Have you forgotten doublethink? — 1949 verb1 •To engage in doublethink. formsdoublethinked · doublethought · doublethunk · doublethinking · doublethinks