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Pertaining to fiction.

Not entirely founded in real life. Not just conjecture, but also fantasy.
The Bible is largely fictitious.

Most 13 y.o. boys have a fictitious foot-long shlong.
by A. Penner February 26, 2010
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Literally no one can identify the difference between the word "fictitious," and "fictional."
**No one fucking knows.**
Generally used to pronounce one's vocabulary.
Teacher: "Today, we are going to be reading a fictitious novel."

Student: "What does the word 'fictitious,' mean?"
Teacher: "It's a synonym for the word 'fictional'."
Student: "What's the difference between the two words?"
Teacher: **"No one fucking knows"**
by The Deer Leader May 25, 2017
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Damn boi! That girl has some fictitious titties. She needs some 3D modelling.
by PABLO CHOCOBAR March 22, 2020
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