Make believe is defined as something that is pretend or that is not real.
An example of make believe is a castle that you pretend you live in but that really doesn't exist at all.
Pretended; feigned; sham.
The definition of make believe is when you pretend that something is true or real even when it is not.
An example of make believe is when you say you are a princess, although you really are not.
A pretending, as in children's play.
Playful or fanciful pretense.
The act of pretending that what is imaginary is real.