What does UPF stand for?

Ultra passionate fan

A UPF is a person who is very passionate about a person, sports team, book, video game, comic, TV show, or movie. It is an acronym that stands for "ultra passionate fan", which was made popular by Mark Hamill, who plays Luke Skywalker in the Star Wars movies.

UPFs take fandom to a whole new level. They integrate the movie, comic book, sports team, etc. into the fabric of their lives. Their passion influences their job, love life, family life, friends, where they live, and their appearance. Usually, UPFs remain respectful of the object of their passion, however some can turn into some real creepers.


He's such a Star Wars UPF, he's been to every premiere and he even got married to his wife on a Star Wars set
Yep, he dressed up as Han and she was Leia

Related Slang


Updated December 13, 2017

UPF definition by Slang.net

This page explains what the acronym "UPF" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.

We are constantly updating our database with new slang terms, acronyms, and abbreviations. If you would like to suggest a term or an update to an existing one, please let us know!