A female who falls hard for a band member or fictional/non-fictional person they step over the line of a healthy fandom to a obsession
Friend: Your such a fangirl
Me: OMG look there is Luke Hemmings
Friend: omg where!??!?
Me: now who's the fangirl
Me: OMG look there is Luke Hemmings
Friend: omg where!??!?
Me: now who's the fangirl
by MinnieMouzze April 7, 2015

Guys help I'm not even kidding Indya Moore is so pretty oh my god she's gorgeous I want her to be my wife
Fangirl: omg did you see *name of random K-pop idol* last night at the *random awards show* his outfit was so cute
Me: *SCREAMING*
Me: *SCREAMING*
by ecstasiesofnonsense June 25, 2020

One who is obsessed with a fictional character/celebrity/band. Fangirls are usually mistaken for stalkers.
by Master's_Kitten March 4, 2015

The armpit women of generation Z (and Y if unemployed). They spend countless hours trying to get noticed by their idol and comment with irritating jargon under their idol's uploads. They are cult-like women who form group "fandoms" and resort to an idiocracy known as "shipping" which is sexually or creepily imaging their idol dating or having sex with an other heart-throb idol. They are found watching and drooling at profiles, pictures, and YouTube uploads of popular attractive teens and twenty-somethings. They are rapidly expanding and must be exterminated at once.
by mermelada July 11, 2014

Females often between the ages of 11-19, obsessed with book series, television programs and/or celebrities. They can be found at local bookstores, arms filled with books they will probably read at a much later time. 78% of the fangirl population stock up on books in case they need to go into hibernation, a form in which they stay in bed all day obsessing over fictional characters. Fangirls are usually harmless, unless approached when reading/watching an important event (which is not recommended). They are mostly seen wearing comfortable clothes, next to no make up, carrying a miming of two books and, sometimes, with earphones in.
Fangirl: Reads a book
Fangirls new favorite book: *Sits in a ray of sunlight on a pedestal under a glass case*
Fangirl: *Never let's anyone touch her new book*
Fangirls new favorite book: *Sits in a ray of sunlight on a pedestal under a glass case*
Fangirl: *Never let's anyone touch her new book*
by The•girl•who•dreamed September 11, 2016
