(Make-believe is a noun or adjective meaning either imaginary or delusional.)
I can give you several sentences.
Cinderella is a make-belive story.
One possibility is the compound word makebelieve.
Land of Makebelieve ended in 1979.
Land of Makebelieve was created in 1954.
The word believe does not have a prefix.
Makebelieve - 2000 was released on: USA: 27 April 2000 (Maryland Film Festival)
A good way to use retentive in a sentence is... "How do you use the word retentive in a sentence?"
use it by saying- how can you use the word ebullient in a sentence?
Can you use the word concluding in a sentence? Done.
How do you use the word gerontology in a sentence?
How can you use the word infectious in a sentence
You can use the word Truss in a sentence like this.