Fiction written by fans for other fans about the fandoms that they like. Usually the author takes the characters and/or the setting of the fandom and writes a new or continueing plot. Sometimes they write crossovers
I once read a Xena, Warrior Princess/Star Treck: Voyager uber, crossover, fanfic.
by Dartxni November 25, 2003
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1. A fan's way of letting a story they love continue on by creating a new story in the same world.

2. A fan's way of saving their favorite characters, fixing thing's they don't like in the plot, and pairing up characters that have nothing in common, were never supposed to be together, and have zero chemistry.

3. Your English teacher's worst nightmare.
You: Hey, I just wrote a fanfiction that continues on Harry Potter's life after Hogwarts.
Friend 1: Awesome! I wrote a fanfic where Darth Vader turned out to be a good guy!
Friend 2: I wrote a fanfiction where Katniss and Peeta weren't in the Hunger Games.
Your worst enemy: I wrote a fanfic where Edward fell in love with Jacob.
Worst enemy's English teacher: DETENTION!
by SuperSnuffles13 January 31, 2011
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a story that is written using characters from different stories that have been previously written, such as Harry Potter, or a manga/anime, such as Naruto or Inuyasha, that may involve self-inserts or OC (original characters).
Hey, are you still writing that story about that series with your characters?" "You mean my fanfiction?" "YEAH! That thing!
by RebelAshRunner November 20, 2010
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A work of fiction utilizing characters from a book, television show, or movie, as opposed to original characters. Referred to as "fan"fiction because it is generally written by fans obsessed with the book, television show, or movie.
"Man, I found some awesome Buffy slash fanfiction last night. Spike and Angel were getting it on!
by Loki August 9, 2005
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Stories written by fans of a certain TV show, cartoon, anime, book, or movie using existing plots, characters, or ideas from the series but then continuing the story, adding new characters, changing the ending, or changing the plot.
Most are written by an obsessed fan who invents a character that's supposed to be like him/her, only 10 times prettier, smarter, and stronger who falls in love with whoever the fan has a crush on. Many of them have poor grammar, thin plots, and bad spelling. But there are a few with original ideas, great storylines, and interesting fancharacters writeen by creative writters. These ones are worth reading.
Most fanfiction is found only at fansites of the series or a general site for all types of fanfiction.
Obsessed Fan: I love Inuyasha sooooo much! *squeee* I'll write a fanfic of a super cool and powerful demon cat girl (that's basically me, only a 100 times better) that comes and takes Inuyasha from that evil bitch Kagome who doesn't deserve him (but I do cause I'm super cool)

Creative Writer: That anime show was so interesting and had some neat ideas, but I have a great, original idea: what if it went like this.... I think I'll write my own fanfiction about it.
by Marisa08 November 29, 2006
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1. Put bluntly, fiction by the fans. Created by fans of any particular fandom, 50% of fanfiction is crap, 24% is non-crappy smut, 25% fits into the category of crap and smut, and the remaining 1% is some pretty good stuff.
2. Something English teachers don't like.
1. Trying to find a non-crap, non-smut fanfiction is a little like trying to mine for gold.
2. My friend's Star Wars fanfiction got an F in English class simply because it was fanfiction.
by ~souba~ November 19, 2005
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N.

A fun pass time for anyone to partake in, fanfiction (often abbreviated into 'fanfic' or 'fic'). Various types of fanfiction include, but are not limited to…

•Oneshot (A fanfic that is one chapter long)
Twoshot (A fanfic that is two chapters long)
•Threeshot (A fanfic that is three chapters long)
•Novel-length
•Short story
Drabble (one-hundred or near words in length)
Ficlet (shorter than a drabble, yet still relevant enough to be a story)

There are many more, but listing them all would take too long.

Many of them are written by illiterate idiots who don't bother to proofread or use a spell-check, and they often have many horrible stories. However, there are plenty of literate, believable, proofread fanfictions out there if you know where to look.

Almost any genre and scenario has been written at least once. And pairings are never-ending as well.

•Slash (MxM)
Femmeslash/Femslash (FxF)
•Gen (No relationship, or it's not a big part)
•Het (MxF)

Those are types of pairings. Fanfiction can be an amazing thing if you know how and where to look for it. (Hint: archiveofourown.org AO3 is a great place with a great community. I wouldn't recommend FanFiction.net simply because of the lack of acknowledgement for new writers)

Happy reading!
Person One: Man, that Death Note fanfiction I read last night was awesome!
Person Two: What was it called? I want to check it out.
Fanfic, Slash, Het, Gen, Femslash/Femmeslash, Fic, Drabble, Fanfiction, Oneshot, Twoshot, Threeshot, Ficlet, AO3, archiveofourown, FanFiction
by Nox_Knows_Things_You_Should August 25, 2016
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