fan fiction

noun3

1. •
   Fiction, typically amateur, created by fans, incorporating the characters and concepts of a commercial media property, typically without permission from the author or owner.

   • Fan fiction writers are just one group now staging revolts against A.I. systems as a fever over the technology has gripped Silicon Valley and the world. — 2023
2. •
   A work of fan fiction.

   • An otherwise strong site is marred by some trashy material. Skip the many bad ER fan fictions here and take the rumors section with a huge grain of salt. — 1998
3. •
   (slang, old-fashioned) Fiction about fans and fandom created by members of fandom.