General:
* Fictional: This is the most straightforward and common adjective for fiction.
* Imaginative: Emphasizes the creative and inventive nature of fiction.
* Narrative: Highlights the storytelling aspect of fiction.
* Literary: Suggests fiction that is of high quality or artistic merit.
Specific Types:
* Fantastic: For fiction with magical or fantastical elements.
* Historical: For fiction set in the past.
* Science fiction: For fiction that deals with futuristic technology and space exploration.
* Romance: For fiction focused on love stories.
* Thriller: For fiction that creates suspense and excitement.
Other Possibilities:
* Made-up: Implies that the story is not based on reality.
* Invented: Similar to "made-up," but with a focus on the creation process.
* Fictitious: A more formal and legalistic way of saying "made-up."
Ultimately, the best adjective for "fiction" depends on the context and what you want to emphasize about it.