Taegoldie is a simp for taehyung from BTS as well as Mingyu from Seventeen. She's a very sweet person who seems to use OOPS and LMAOO alot. She'll take care of you even if she's busy and always find time for you. She's very fun to be around and you're definitely lucky if you have a taegoldie in your life.

Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.