Existing only in the imagination; not real or based on fact. 'Made-up' describes something that has been invented, fabricated, or contrived, often with the intention to deceive or entertain.
It can refer to a story, excuse, or characteristic that is not genuine. The degree of intentionality behind its creation can vary, ranging from harmless fantasy to deliberate deception.
Importantly, 'made-up' doesn't necessarily imply malicious intent, as it can also apply to fictional narratives and creative endeavors.
FALSE NOTSO BOGUS
UNTRUE ATONED COINED
FICTIVE
COMPILED
FICTIONAL IMAGINARY