Prefix fiction might be a new or specialized term. It could be that it represents a form of fiction where the title or the main concept has a prefix that is significant. Say, 'Meta -' as in metafiction where the story is self - referential. It's hard to say precisely without more context, but it seems like it's about some sort of categorization or characteristic related to the beginning part of a fictional work.
Maybe 'over'. For 'fat', 'over - fat' can describe someone or something that has too much fat. In the case of 'fiction', 'over - fiction' could be used to describe a story that has too much of the fictional elements, perhaps being overly imaginative or far - fetched.
Well, I think 'un' could also be a possible prefix. For 'fat', we have 'unfat' which could mean to make not fat or lose fat, although it's not a very common word. In the case of 'fiction', 'unfiction' could be used in a creative sense to mean something that is not fictional, like non - fictional or real - world related things.
Often, prefixes like 'post-' as in 'post-apocalyptic' or 'trans-' as in 'trans-dimensional' are used in fiction to add a specific flavor or context. It really depends on the genre and the story being told.
To write prefix fiction, first decide on the prefix that will be the common thread. It could be something like 'Neo -' for a modern take on a genre. Then, build your story around that. If it's 'Neo - noir', include elements of traditional noir like a morally ambiguous detective but set it in a modern, high - tech world.
The word 'fat' could have the prefix 'un -' to form 'unfat' (though not a very common word). For 'fiction', a possible prefix could be 'non -' as in 'non - fiction'. However, it really depends on the context. Maybe it's a riddle or a play on words.