(fandom) A femalefan who is obsessive about a particular subject (especially, someone or something in popular entertainment media).
2016, Kathleen Smith, The Fangirl Life: A Guide to All the Feels and Learning How to Deal, It's often an all or nothing world for the fangirl who has yet to learn to bridle the imagination. She is notorious for being incapable of passively enjoying stories.
2015, w:Tyler Oakley, Binge, I bought the magazines, ran home after work, filmed myself flipping through the pages—half legitimately fangirling over the boys, half making fun of people like myself who fangirl over the boys.
2024-02-29, Jack King, Why everyone you know is suddenly a Letterboxd head, Letterboxd, armed with the tri-colour microphone which has become their viral go-to, recently attended the red carpet of the BAFTAs. As one TikToker put it, on seeing the famous mic, Paul Mescal fangirled.