fangirl - definition and synonyms

verb [intransitive/transitive] informal 

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present tense
present participlefangirling
past tensefangirled
past participlefangirled
  1. to be a very enthusiastic female fan of a band, actor, type of entertainment, product etc
    fangirl over:

    I was actually quite surprised at how much I fangirled over him!

    When she isn’t online, she spends her time acting, writing, and fangirling various dead people.