make believe

make believe

1. verb To pretend; to use one's imagination. When I was a kid, I used to love to make believe that I was an astronaut flying to Mars in my rocket ship, which was really a cardboard box. It's fun to make believe! You can be anyone you want!
2. noun Something imagined; something that does not exist in reality. In this usage, the term is usually hyphenated. The make-believe we engage in as children lays the foundation for our ability to be creative later in life. A lot of people dismiss these movies as simple make-believe, but they contain a very complex mythology. Are you telling the truth about what happened, or is this all just make-believe?
3. adjective Imagined or pretended. In this usage, the term is usually hyphenated. Do they really expect us to fall for these make-believe explanations?
See also: believe, make
Farlex Dictionary of Idioms.

make believe

Pretend, as in Let's make believe we're elves. This expression in effect means making oneself believe in an illusion. [Early 1700s]
See also: believe, make
The American Heritage® Dictionary of Idioms by Christine Ammer.

make beˈlieve (that...)

pretend (that...): The journey seemed like an attempt to make believe that the modern world didn’t exist. a world of fantasy and make-believe
See also: believe, make
Farlex Partner Idioms Dictionary

make believe

To pretend.
See also: believe, make
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • check out
  • check out, to
  • check something out
  • checkout
  • blow
  • blown
  • cross over
  • face off
  • face-off
  • answer to