Answer:
Big brother- it refers to any authoritarian leader and an invasion of privacy ex: "Big brother is watching you."
Double think- Holding two contradictory beliefs in one’s mind simultaneously, and accepting both of them. Ex: often used to refer to politics or indoctrination.
Newspeak- confusing language with restricted grammar and limited vocabulary use to diminish the range of thought. Ex: often used to refer to politics and is used as references in utopian/dystopian books
