noun
ex-nerd; former otaku; someone who has given up geeky hobbies
Refers to a person who used to be deeply into anime, manga, games, or similar subcultures but has since left that lifestyle behind, often including changes in appearance and mannerisms.
See also: オタク
彼は脱オタクして、今はスーツを着て働いている。
He gave up his otaku lifestyle and now works in a suit.
脱オタクを目指して部屋のフィギュアを全部売った。
Aiming to become an ex-nerd, I sold all the figurines in my room.